Edit types in Angular TreeGrid component

8 May 202424 minutes to read

The Angular TreeGrid component in Syncfusion provides various edit types that allow you to customize the editing behavior for different types of columns. These edit types enhance the editing experience and provide flexibility in handling different data types.

Default cell edit type editor

The Tree Grid provides pre-built default editors that enhance data editing and input handling within the tree grid. These default editors are designed to simplify the process of defining the editor component for specific columns based on the data type of the column within the tree grid. To configure default editors for tree grid columns, leverage the editType property of column.

The available default edit types are as follows:

Component Edit Type value Description
TextBox stringedit The stringedit type renders a TextBox component for string data type columns.
NumericTextBox numericedit The numericedit type renders a NumericTextBox component for integers, double, float, short, byte, long, long double and decimal data types columns.
DropDownList dropdownedit The dropdownedit type renders a DropdownList component for string data type columns.
Checkbox booleanedit The booleanedit type renders a CheckBox component for boolean data type columns.
DatePicker datepickeredit The datepickeredit type renders a DatePicker component for date data type columns.
DateTimePicker datetimepickeredit The datetimepickeredit type renders a DateTimePicker component for date time data type columns.

The following example demonstrates how to define the editType for tree grid columns:

    <e-column field="taskName" headerText="Task Name" editType="stringedit"></e-column>
    <e-column field="duration" headerText="Duration" editType="numericedit'"></e-column>
    <e-column field="priority" headerText="Priority" editType="dropdownedit"></e-column>
    <e-column field="startDate" headerText="Start Date" editType="datepickeredit"></e-column>
    <e-column field="endTime" headerText="End Time" editType="datetimepickeredit"></e-column>
    <e-column field="approved" headerText="Approved" editType="booleanedit"></e-column>

If editType property is not defined in the column, then it will be considered as the stringedit type (TextBox component) .

Customize TextBox component of stringedit type

You can customize the default TextBox component in Tree Grid edit form using its property. This customization allows you to configure various properties of the TexBox, tailoring its behavior and appearance to match your specific requirements within the tree grid. The behavior of the editor component can be fine-tuned through the columns->edit->params property.

Component Edit Type Description Example Customized edit params
TextBox stringedit The stringedit type renders a TextBox component for string data type columns. To customize the TextBox component, refer to the TextBox API documentation for detailed information on available properties params: { showClearButton : true}

The following sample code demonstrates the customization applied to TextBox component of taskName column in tree grid:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit ,ViewChild} from '@angular/core';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' [edit]='stringParams'  textAlign='Left' width=180></e-column>
                        <e-column field='startDate' headerText='Start Date' textAlign='Right' editType='datepickeredit' format='yMd' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public stringParams?: IEditCell;
    
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.stringParams = {
            params: {
                showClearButton: true
            }
        };
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Customize NumericTextBox component of numericedit type

You can customize the NumericTextBox component in Tree Grid edit form using its property. This customization allows you to configure various properties of the NumericTextBox, tailoring its behavior and appearance to match your specific requirements within the tree grid. The behavior of the editor component can be fine-tuned through the columns->edit->params property.

Component Edit Type Description Example Customized edit params
NumericTextBox numericedit TThe numericedit type renders a NumericTextBox component for integers, double, float, short, byte, long, long double and decimal data types columns. To customize the NumericTextBox component, refer to the NumericTextBox API documentation for detailed information on available properties. params: { decimals: 2, value: 5 }

The following sample code demonstrates the customization applied to NumericTextBox component of Progress column in the tree grid:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit ,ViewChild} from '@angular/core';
import { DropDownList } from '@syncfusion/ej2-dropdowns';
import { Query, DataManager } from '@syncfusion/ej2-data';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                         <e-column field='priority' headerText='Priority' editType= 'dropdownedit' [edit]='priorityParams' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' [edit] ='numericParams'  headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public numericParams?: IEditCell;
   
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.numericParams = {
            params: {
                decimals: 0,
                format: 'N',
                showClearButton: true,
                showSpinButton: false
            }
        };
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Restrict the decimal points in a NumericTextBox while editing the numeric column

By default, the NumericTextBox component allows entering decimal values with up to two decimal places when editing a numeric column. However, there might be cases where you want to restrict input to whole numbers only, without any decimal points. In such scenarios, you can make use of the validateDecimalOnType and decimals properties provided by Syncfusion’s NumericTextBox component.

The validateDecimalOnType property is used to control whether decimal points are allowed during input in the NumericTextBox. By default, it is set to false, allowing decimal points to be entered. However, when set to true, decimal points will be restricted, and only whole numbers can be entered.

The decimals property specifies the number of decimal places to be displayed in the NumericTextBox. By default, it is set to 2, meaning that two decimal places will be displayed. However, you can modify this value to customize the decimal places according to your requirements.

In the below demo, while editing the row the decimal point value is restricted to type in the NumericTextBox of Duration column.

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit ,ViewChild} from '@angular/core';
import { DropDownList } from '@syncfusion/ej2-dropdowns';
import { Query, DataManager } from '@syncfusion/ej2-data';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                         <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=140></e-column>
                        <e-column field='duration' editType= 'numericedit' [edit] ='numericParams'  headerText='Duration' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public numericParams?: IEditCell;
   
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.numericParams = { params: {
            validateDecimalOnType: true,
            decimals: 0,
            format: 'N' }
        };
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5.67,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 15.87, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 64.98, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 34.90, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 22.77, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 37.98,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 45.95, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 24.86, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 28.94, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 26.92, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 37.76, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11.76,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 15.86,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 16.89,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 67.89, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 45.96, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 64.97, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 33.67, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 25.34, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 89.76, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12.78,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 67.98,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 64.87, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 75.29, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 65.23, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 78.92, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 56.98, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 34.70, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11.86,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 65.72,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration:45.03, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 65.29, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 89.56, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 73.68, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 92.58, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 75.89, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Customize DropDownList component of DropDownEdit type

You can customize the DropDownList component in Tree Grid edit form using its property. This customization allows you to configure various properties of the DropDownList, tailoring its behavior and appearance to match your specific requirements within the tree grid. The behavior of the editor component can be fine-tuned through the columns->edit->params property.

Component Edit Type Description Example Customized edit params
DropDownList- DropDownEdit The dropdownedit type renders a DropDownList component for string data type columns. To customize the DropDownList component, refer to the DropDownList API documentation for detailed information on available properties. params: { value: ‘High’ }

The following sample code demonstrates the customization applied to DropDownList component of priority column in the tree grid:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit ,ViewChild} from '@angular/core';
import { DropDownList } from '@syncfusion/ej2-dropdowns';
import { Query, DataManager } from '@syncfusion/ej2-data';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                         <e-column field='priority' headerText='Priority' editType='dropdownedit' [edit]='dropdownparams' textAlign='Right' width=140></e-column>
                        <e-column field='duration' headerText='Duration' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public dropdownparams?: IEditCell;
   
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.dropdownparams = {
            params: {
                showClearButton: true,
                popupHeight: 120
            }
        };
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Provide custom data source for DropDownList component

In TreeGrid component, you have an option to provide a custom data source for the DropDownList component in the edit form. This feature allows you to define a specific set of values for the DropDownList.

To achieve this, you can utilize the columns->edit->params property. This property allows you to define the edit params for the column within the tree grid.

When setting a new data source using the edit params, you need to specify a new query property for the DropDownList. The query property allows you to define custom queries for data retrieval and filtering.

In the below demo, DropDownList is rendered with custom data source for the Priority column :

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit ,ViewChild} from '@angular/core';
import { DropDownList } from '@syncfusion/ej2-dropdowns';
import { Query, DataManager } from '@syncfusion/ej2-data';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService  } from '@syncfusion/ej2-angular-treegrid';
import { IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' textAlign='Left' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' [edit]='priorityParams' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public priorityParams?: IEditCell;

    public prior: object[] = [
        { priorityType: 'Normal', Id: '1' },
        { priorityType: 'Critical', Id: '2' },
        { priorityType: 'High', Id: '3' },
        { priorityType: 'Low', Id: '4' }
    ];

    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.priorityParams = {
            params: {
                dataSource: new DataManager(this.prior),
                fields: { text: 'priorityType', value: 'priorityType' },
                query: new Query(),
                actionComplete: () => false
            }
        };
    }

}
/**
 * TreeGrid DataSource
 */

export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Apply filtering for DropDownList component

The TreeGrid component provides filtering for the DropDownList within the edit form. This feature allows to select options from a predefined list and easily search for specific items using the built-in filtering feature.

To enable filtering, set the allowFiltering property to true within the edit params. This will enable the filtering feature in the DropDownList.

In the following demo, filtering is enabled for the Priority column:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit ,ViewChild} from '@angular/core';
import { DropDownList } from '@syncfusion/ej2-dropdowns';
import { Query, DataManager } from '@syncfusion/ej2-data';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                        <e-column field='startDate' headerText='Start Date' textAlign='Right' editType='datepickeredit' format='yMd' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' [edit]='priorityParams' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public priorityParams?: IEditCell;

    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.priorityParams = {
            params: {
                allowFiltering: true,
    
            }
        };

    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Open popup while focusing in the edit cell

You can open the dropdown edit popup with a single click by focusing the dropdown element. This feature allows you to quickly access and interact with the dropdown options without the need for an additional click.

To achieve this, you can utilize the showPopup method provided by the EJ2 DropDownList component. This method can be invoked within the actionComplete event of the tree grid, which triggers when an action, such as editing, is completed. By calling the showPopup method in this event, you can open the popup for the dropdown edit.

To ensure that the dropdown column is the clicked edit target, you need to set a global flag variable in the mouseup event along with load event. This flag variable will be used to determine if the clicked element corresponds to the dropdown column.

The following sample demonstrates how to open the popup when focusing on the edit cell using the actionComplete and load events:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit, ViewChild } from '@angular/core';
import { DropDownList } from '@syncfusion/ej2-dropdowns';
import { Query, DataManager } from '@syncfusion/ej2-data';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems, TreeGridComponent,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { EditEventArgs, IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid #treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (load)='load($event)' (actionComplete)='onActionComplete($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                        <e-column field='startDate' headerText='Start Date' textAlign='Right' editType='datepickeredit' format='yMd' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    
    @ViewChild('treegrid')
    public treegrid?:TreeGridComponent;
    public isDropdown = false;

    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true,mode:'Row' };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
       
    }
    
  load(args: Object) {
    (this.treegrid as TreeGridComponent).element.addEventListener('mouseup', (e: MouseEvent) => {
      if ((e.target as HTMLElement).classList.contains('e-rowcell')) {
        if ( (this.treegrid as TreeGridComponent).grid.isEdit) {
           (this.treegrid as TreeGridComponent).endEdit();
        }
        let rowInfo =  (this.treegrid as TreeGridComponent).getRowInfo(e.target as EventTarget);
        if (rowInfo && rowInfo.column && (rowInfo.column as any).field  === 'priority') {
          this.isDropdown = true;
           (this.treegrid as TreeGridComponent).selectRow((rowInfo.rowIndex as number));
           (this.treegrid as TreeGridComponent).startEdit();
        }
      }
    });
  }

  onActionComplete(args: EditEventArgs) {
    if (args.requestType === 'beginEdit' && this.isDropdown) {
      this.isDropdown = false;
      let dropdownObj = ((args.form as HTMLFormElement).querySelector('.e-dropdownlist') as HTMLFormElement)['ej2_instances'][0] ;
      dropdownObj.element.focus();
      dropdownObj.showPopup();
    }
  }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Customize CheckBox component of booleanedit type

You can customize the CheckBox component in Tree Grid edit form using its property. This customization allows you to configure various properties of the CheckBox, tailoring its behavior and appearance to match your specific requirements within the tree grid. The behavior of the editor component can be fine-tuned through the columns->edit->params property.

Component Edit Type Description Example Customized edit params
CheckBox booleanedit The booleanedit type renders a CheckBox component for boolean data type. To customize the CheckBox component, refer to the CheckBox API documentation for detailed information on available properties. params: { checked: true}

The following sample code demonstrates the customization applied to CheckBox component of approved column in the tree grid:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { Component, OnInit, ViewChild } from '@angular/core';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems, TreeGridComponent,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { EditEventArgs, IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid #treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                        <e-column field='startDate' headerText='Start Date' textAlign='Right' editType='datepickeredit' format='yMd' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=140></e-column>
                        <e-column field='approved' headerText='Approved' width='80'  [displayAsCheckBox]='true' editType= 'booleanedit' [edit]='booleanparams' ></e-column>    
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public booleanparams?: IEditCell;
    @ViewChild('treegrid')
    public treegrid?:TreeGridComponent;
    
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true,mode:'Row' };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.booleanparams = {
            params: {
                disabled: true,
            }
        };
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Customize DatePicker component of datepickeredit type

You can customize the DatePicker component in Tree Grid edit form using its property. This customization allows you to configure various properties of the DatePicker, tailoring its behavior and appearance to match your specific requirements within the tree grid. The behavior of the editor component can be fine-tuned through the columns->edit->params property.

Component Edit Type Description Example Customized edit params
DatePicker datepickeredit The datepickeredit type renders a DatePicker component for date data type columns. To customize the DatePicker component, refer to the DatePicker API documentation for detailed information on available properties. params: { format:’dd.MM.yyyy’ }

The following sample code demonstrates the customization applied to DatePicker component of startDate column in the tree grid:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit, ViewChild } from '@angular/core';

import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems, TreeGridComponent,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { EditEventArgs, IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid #treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                        <e-column field='startDate' headerText='Start Date' textAlign='Right' editType='datepickeredit' [edit]='datepickerparams' format='yMd' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=140></e-column>
                        <e-column field='approved' headerText='Approved' width='80'  [displayAsCheckBox]='true' editType= 'booleanedit'></e-column>    
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public datepickerparams?: IEditCell;
    @ViewChild('treegrid')
    public treegrid?:TreeGridComponent;
    
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true,mode:'Row' };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.datepickerparams = {
            params: {
                showClearButton: false,
                showTodayButton: false
            }
        };
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Customize DateTimePicker component of datetimepickeredit type

You can customize the DateTimePicker component in Tree Grid edit form using its property. This customization allows you to configure various properties of the DateTimePicker, tailoring its behavior and appearance to match your specific requirements within the tree grid. The behavior of the editor component can be fine-tuned through the columns->edit->params property.

Component Edit Type Description Example Customized edit params
DateTimePicker datetimepickeredit The datetimepickeredit type renders a DateTimePicker component for date time data type columns. You can customize the DateTimePicker component, refer to the DateTimePicker API documentation for detailed information on available properties. params: { value: new Date() }

The following sample code demonstrates the customization applied to DateTimePicker component of startDate column in the tree grid:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit, ViewChild } from '@angular/core';

import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems, TreeGridComponent, EditService, ToolbarService, PageService} from '@syncfusion/ej2-angular-treegrid';
import { EditEventArgs, IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid #treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                        <e-column field='startDate' headerText='Start Date' textAlign='Right' format='MM-dd-yyyy hh mm aa' editType= 'datetimepickeredit' [edit]='datetimepickerparams' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=140></e-column>
                        <e-column field='approved' headerText='Approved' width='80'  [displayAsCheckBox]='true' editType= 'booleanedit'></e-column>    
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public datetimepickerparams?: IEditCell;
    @ViewChild('treegrid')
    public treegrid?:TreeGridComponent;
    
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true,mode:'Row' };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.datetimepickerparams = { params: {
            showClearButton : false,
            format:'MM-dd-yyyy hh:mm aa',
            start:'Year',
           }
        };
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Access editor components using instance

Accessing editor components in the Tree Grid allows you to interact with the editor instances associated with cells during editing or adding actions. This feature is especially useful when you need to perform custom actions, retrieve data from the Editor, or manipulate its properties during editing or adding operations in the tree grid.

To access the component instance from the component element, you can use the ej2_instances property. This property provides access to the instance of the editor component associated with a cell.

In the below demo, you can access the editor component instance while adding or editing actions in the actionComplete event.

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit, ViewChild } from '@angular/core';

import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService, TreeGridComponent } from '@syncfusion/ej2-angular-treegrid';
import { EditEventArgs, IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid #treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionComplete)="access($event)" childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name'  textAlign='Left' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=140></e-column>
                        <e-column field='duration' editType= 'numericedit' headerText='Duration' textAlign='Right' width=120></e-column>
                        <e-column field='approved' headerText='Approved' width='80'  [displayAsCheckBox]='true' editType= 'booleanedit'></e-column>    
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    @ViewChild('treegrid')
    public treegrid?:TreeGridComponent;
    
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true,mode:'Row' };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    public access(args: EditEventArgs): void {
        if (args.requestType === 'beginEdit' || args.requestType === 'add') {
          const tr = args.row as HTMLTableRowElement;
          const numericTextBox = tr.querySelector('.e-numerictextbox');
          if (numericTextBox) {
            const numericTextBoxInstance = (numericTextBox as HTMLFormElement)['ej2_instances'][0];
            numericTextBoxInstance.element.style.backgroundColor = 'light pink';
            numericTextBoxInstance.element.style.color = 'black';
            numericTextBoxInstance.element.style.border = '2px solid red';
            numericTextBoxInstance.element.style.textAlign = 'center';
            numericTextBoxInstance.max = 1000;
            numericTextBoxInstance.min = 1;
          }
          const dropDownList = tr.querySelector('.e-dropdownlist') ;
          if (dropDownList) {
            const dropDownListInstance = (dropDownList as HTMLFormElement)['ej2_instances'][0];
            dropDownListInstance.showPopup(); // Open the dropdown list
          }
        }
      }
}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render custom cell editors

The Tree Grid allows you to render custom cell editors for particular columns. This feature is particularly useful when you need to use custom components to edit the data within a tree grid column. To achieve this, you can make use of the editTemplate of the column in TreeGrid component.

Custom components inside the editTemplate must be specified with two-way (@bind-Value) binding to reflect the changes in tree grid.

Render textArea in edit form

The Tree Grid allows you to render a textArea within the tree grid’s edit form for a specific column. This feature is especially valuable when you need to edit and display multi-line text content, providing an efficient way to manage extensive text data within the tree grid’s columns.

To render a textArea in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

When using a text area, press Shift+Enter to move to the next line. By default, pressing Enter will trigger a record update while you are in edit mode.

The following example demonstrates how to render a textArea component in the Task Name column of the tree grid. The valueAccessor property is utilized to split the text into multiple lines within the treegrid column:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit, ViewChild } from '@angular/core';

import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService,  TreeGridComponent } from '@syncfusion/ej2-angular-treegrid';
import { EditEventArgs, IEditCell, SaveEventArgs } from '@syncfusion/ej2-angular-grids';
import { TextBoxModule} from '@syncfusion/ej2-angular-inputs';

@Component({
    imports: [
    TreeGridAllModule,TextBoxModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid #treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' [valueAccessor]="valueAccessor"  clipMode='EllipsisWithTooltip' textAlign='Left' width=200>
                            <ng-template #editTemplate let-data>
                                <ejs-textbox id="ShipAddress" [multiline]='true' [(ngModel)]="taskData.taskName" ></ejs-textbox>
                            </ng-template>
                        </e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=100></e-column>
                        <e-column field='duration' editType= 'numericedit' headerText='Duration' textAlign='Right' width=120></e-column>
                        <e-column field='approved' headerText='Approved' width='80'  [displayAsCheckBox]='true' editType= 'booleanedit'></e-column>    
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    @ViewChild('treegrid')
    public treegrid?:TreeGridComponent;
    public taskData?: object | any;
    
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true,mode:'Row' };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    public valueAccessor = (field: string, data:any) => {
        const value = data.taskName;
        return (value !== undefined) ? value.split('\n').join('<br>') : '';
    };
    actionBegin(args: SaveEventArgs) {
        if (args.requestType === 'beginEdit' || args.requestType === 'add') {
            this.taskData = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['taskName'] = this.taskData['taskName'];
        }
    }
}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Prevent the enter key functionality in multiline textbox while editing

While editing a particular row in dialog or row edit mode, pressing the ENTER key will save the changes made in the specific cell or edit form. Similarly, pressing the ENTER key while performing editing with the multiline textbox will save the changes. However, in a multiline textbox, it is often desired that pressing the ENTER key adds a new line break in the text content, rather than triggering the save action.

To achieve this behavior, you can utilize the stopPropagation method along with the focus event of the textBox component. This prevents the default behavior of the ENTER key, allowing you to manually handle the newline behavior.

The following example demonstrates how to prevent the enter key functionality in multiline textbox during editing by utilizing the focus event:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit, ViewChild } from '@angular/core';
import { sampleData } from './datasource';
import { EditSettingsModel, ToolbarItems, EditService, ToolbarService, PageService, TreeGridComponent } from '@syncfusion/ej2-angular-treegrid';
import { EditEventArgs, IEditCell, SaveEventArgs } from '@syncfusion/ej2-angular-grids';
import { FocusInEventArgs } from '@syncfusion/ej2-inputs';
import { TextBoxModule,  } from '@syncfusion/ej2-angular-inputs';

@Component({
    imports: [
    TreeGridAllModule,TextBoxModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid #treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' [valueAccessor]="valueAccessor"  clipMode='EllipsisWithTooltip' textAlign='Left' width=200>
                            <ng-template #editTemplate let-data>
                                <ejs-textbox id="ShipAddress" [multiline]='true' [(ngModel)]="taskData.taskName" (focus)="onFocus($event)"></ejs-textbox>
                            </ng-template>
                        </e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' width=100></e-column>
                        <e-column field='duration' editType= 'numericedit' headerText='Duration' textAlign='Right' width=120></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    @ViewChild('treegrid')
    public treegrid?:TreeGridComponent;
    public taskData?: object | any;
    
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true,mode:'Row' };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    public valueAccessor = (field: string, data:any) => {
        const value = data.taskName;
        return (value !== undefined) ? value.split('\n').join('<br>') : '';
    };
    onFocus(args: FocusInEventArgs): void {
        ((args.event as Event).target as EventTarget).addEventListener('keydown', (e) => {
            if ((e as KeyboardEvent).key === 'Enter') {
                e.stopPropagation();
            }
        });
    }
    actionBegin(args: SaveEventArgs) {
        if (args.requestType === 'beginEdit' || args.requestType === 'add') {
            this.taskData = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['taskName'] = this.taskData['taskName'];
        }
    }
}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render AutoComplete component in edit form

The Tree Grid allows you to render a AutoComplete component within the tree grid’s edit form for a specific column. This feature is especially valuable when you need to provide a dropdown-like auto-suggestion and input assistance for data entry in the tree grid’s columns.

To render a AutoComplete component in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

The following example demonstrates how to render an AutoComplete component in the taskName column of the tree grid. The actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { AutoCompleteModule } from '@syncfusion/ej2-angular-dropdowns';
import { Component, OnInit ,ViewChild} from '@angular/core';
import { sampleData ,dropdowndata} from './datasource';
import { EditSettingsModel,EditService, ToolbarService, PageService, ToolbarItems } from '@syncfusion/ej2-angular-treegrid';

@Component({
    imports: [
    TreeGridAllModule, AutoCompleteModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' textAlign='Left' width=250>
                            <ng-template #editTemplate let-data>
                                <ejs-autocomplete [dataSource]='autoCompleteData' [(value)]='taskData.taskName'></ejs-autocomplete>
                            </ng-template>
                        </e-column>
                        <e-column field='startDate' headerText='Start Date' textAlign='Right' editType='datepickeredit' format='yMd' width=180></e-column>
                        <e-column field='priority' headerText='Priority' editType= 'dropdownedit' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData?: object | any;
    public autoCompleteData:any=dropdowndata;
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['taskName'] = this.taskData['taskName'];
        }
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];

export let dropdowndata =['Planning','Plan timeline','Plan budget','Allocate resources','Planning complete',
  'Design','Software Specification','Develop prototype', 'Get approval from customer','Design Documentation','Design complete',
  'Implementation Phase','Phase 1','Implementation Module 1','Development Task 1', 'Development Task 2','Testing',
  'Bug fix','Customer review meeting', 'Phase 1 complete', 'Phase 2','Implementation Module 2','Phase 2 complete', 
  'Phase 3','Implementation Module 3', 'Phase 3 complete',
  ];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];

export let dropdowndata =['Planning','Plan timeline','Plan budget','Allocate resources','Planning complete',
  'Design','Software Specification','Develop prototype', 'Get approval from customer','Design Documentation','Design complete',
  'Implementation Phase','Phase 1','Implementation Module 1','Development Task 1', 'Development Task 2','Testing',
  'Bug fix','Customer review meeting', 'Phase 1 complete', 'Phase 2','Implementation Module 2','Phase 2 complete', 
  'Phase 3','Implementation Module 3', 'Phase 3 complete',
  ];

Render MaskedTextBox component in edit form

The Tree Grid allows you to render a MaskedTextBox component within the tree grid’s edit form for a specific column. This feature is especially useful when you need to provide masked input fields that require a specific format, such as phone numbers or postal codes.

To render a MaskedTextBox component in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

Here’s an example of how to render a MaskedTextBox component in the Contact column of the tree grid. The actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';

import { Component, OnInit ,ViewChild} from '@angular/core';
import { textdata} from './datasource';
import { MaskedTextBoxModule } from '@syncfusion/ej2-angular-inputs';
import { EditSettingsModel, ToolbarItems ,EditService, ToolbarService, PageService,} from '@syncfusion/ej2-angular-treegrid';

@Component({
    imports: [
    TreeGridAllModule,MaskedTextBoxModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='Children' >
                    <e-columns>
                        <e-column field='EmployeeID' headerText='Employee ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='Name' headerText='Name' textAlign='Left' width=180></e-column>
                        <e-column field='Contact' headerText='Contact' width=180>
                            <ng-template #editTemplate let-data>
                                <ejs-maskedtextbox id="masktextbox" #mask name="Contact" mask='000-000-0000' [(value)]="employeeData.Contact"></ejs-maskedtextbox>
                            </ng-template>
                        </e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public employeeData?: object | any;
    
    ngOnInit(): void {
        this.data = textdata;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true,mode:"Row" };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.employeeData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['Contact'] = this.employeeData['Contact'];
        }
    }

}
/**
 * TreeGrid DataSource
 */

export let textdata: Object[] = [{
    'FirstName':'Robert',
    'LastName':'King',
    'Name': 'Robert King',
    'FullName': 'RobertKing',
    'Designation': 'Chief Executive Officer',
    'EmployeeID': '1',
    'EmpID': 'EMP001',
    'Address': '507 - 20th Ave. E.Apt. 2A, Seattle',
    'Contact': '2065559857',
    'Country': 'USA',
    'DOB': new Date('2/15/1963'),

    'Children': [{
        'FirstName':'David',
        'LastName':'william',
        'Name': 'David william',
        'FullName': 'DavidWilliam',
        'Designation': 'Vice President',
        'EmployeeID': '2',
        'EmpID': 'EMP004',
        'Address': '722 Moss Bay Blvd., Kirkland',
        'Country': 'USA',
        'Contact': '2065553412',
        'DOB': new Date('5/20/1971'),


        'Children': [{
            'FirstName':'Nancy',
            'LastName':'Davolio',
            'Name': 'Nancy Davolio',
            'FullName': 'NancyDavolio',
            'Designation': 'Marketing Executive',
            'EmployeeID': '3',
            'EmpID': 'EMP035',
            'Address': '4110 Old Redmond Rd., Redmond',
            'Country': 'USA',
            'Contact': '2065558122',
            'DOB': new Date('3/19/1966'),
            'Children': [
                {
                    'FirstName':'Andrew',
                    'LastName':'Fuller',
                    'Name': 'Andrew Fuller',
                    'FullName': 'AndrewFuller',
                    'Designation': 'Sales Representative',
                    'EmployeeID': '4',
                    'EmpID': 'EMP045',
                    'Address': '14 Garrett Hill, London',
                    'Country': 'UK',
                    'Contact': '7155544848',
                    'DOB': new Date('9/20/1980')
                },
            {
                'FirstName':'Anne',
                'LastName':'Dodsworth',
                'Name': 'Anne Dodsworth',
                'FullName': 'AnneDodsworth',
                'Designation': 'Sales Representative',
                'EmployeeID': '5',
                'EmpID': 'EMP091',
                'Address': '4726 - 11th Ave. N.E., Seattle',
                'Country': 'USA',
                'Contact': '2065551189',
                'DOB': new Date('10/19/1989')
            },
            {
                'FirstName':'Michael',
                'LastName':'Suyama',
                'Name': 'Michael Suyama',
                'FullName': 'MichaelSuyama',
                'Designation': 'Sales Representative',
                'EmployeeID': '6',
                'EmpID': 'EMP110',
                'Address': 'Coventry House Miner Rd., London',
                'Country': 'UK',
                'Contact': '7145553636',
                'DOB': new Date('11/02/1987')
            },
            {
                'FirstName':'Janet',
                'LastName':'Leverling',
                'Name': 'Janet Leverling',
                'FullName': 'JanetLeverling',
                'Designation': 'Sales Coordinator',
                'EmployeeID': '7',
                'EmpID': 'EMP131',
                'Address': 'Edgeham Hollow Winchester Way, London',
                'Country': 'UK',
                'Contact': '7145553636',
                'DOB': new Date('11/06/1990')
            },
            ]

        },
        {
            'FirstName':'Romey',
            'LastName':'Wilson',
            'Name': 'Romey Wilson',
            'FullName': 'RomeyWilson',
            'Designation': 'Sales Executive',
            'EmployeeID': '8',
            'EmpID': 'EMP039',
            'Address': '7 Houndstooth Rd., London',
            'Country': 'UK',
            'Contact': '7125553690',
            'DOB': new Date('02/02/1980'),
            'Children': [
            {
                'FirstName':'Margaret',
                'LastName':'Peacock',
                'Name': 'Margaret Peacock',
                'FullName': 'MargaretPeacock',
                'Designation': 'Sales Representative',
                'EmployeeID': '9',
                'EmpID': 'EMP213',
                'Address': '4726 - 11th Ave. N.E., California',
                'Country': 'USA',
                'Contact': '2065551989',
                'DOB': new Date('01/21/1986')
            },
            {
                'FirstName':'Laura',
                'LastName':'Callahan',
                'Name': 'Laura Callahan',
                'FullName': 'LauraCallahan',
                'Designation': 'Sales Coordinator',
                'EmployeeID': '10',
                'EmpID': 'EMP201',
                'Address': 'Coventry House Miner Rd., London',
                'Country': 'UK',
                'Contact': '7145552222',
                'DOB': new Date( '12/01/1990')
            },
            {
                'FirstName':'Steven',
                'LastName':'Buchanan',
                'Name': 'Steven Buchanan',
                'FullName': 'StevenBuchanan',
                'Designation': 'Sales Representative',
                'EmployeeID': '11',
                'EmpID': 'EMP197',
                'Address': '200 Lincoln Ave, Salinas, CA 93901',
                'Country': 'USA',
                'Contact': '1737587408',
                'DOB': new Date('03/23/1987')
            },
            {
                'FirstName':'Tedd',
                'LastName':'Lawson',
                'Name': 'Tedd Lawson',
                'FullName': 'TeddLawson',
                'Designation': 'Sales Representative',
                'EmployeeID': '12',
                'EmpID': 'EMP167',
                'Address': '200 Lincoln Ave, Salinas, CA 93901',
                'Country': 'USA',
                'Contact': '1737587368 ',
                'DOB': new Date('08/09/1989')
            },
            ]
        }]
    }]
}];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render DropDownList component in edit form

The Tree Grid allows you to render a DropDownList component within the tree grid’s edit form for a specific column. This feature is valuable when you need to provide a convenient way to select options from a predefined list while editing data in the tree grid’s edit form.

To render a DropDownList component in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

The following example demonstrates how to render a DropDownList component in the taskName column of the Tree Grid .The actionBegin event is handled to update the edited value in the grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { DropDownListModule } from '@syncfusion/ej2-angular-dropdowns';
import { Component, OnInit ,ViewChild} from '@angular/core';
import { sampleData ,dropdowndata} from './datasource';
import { EditSettingsModel, ToolbarItems ,EditService, ToolbarService, PageService} from '@syncfusion/ej2-angular-treegrid';

@Component({
    imports: [
    TreeGridAllModule,DropDownListModule 
    ],
    standalone: true,
    providers: [EditService, ToolbarService, PageService],
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' textAlign='Left' width=250>
                            <ng-template #editTemplate let-data>
                                <ejs-dropdownlist [dataSource]='selectDatasource' [(value)]='taskData.taskName'></ejs-dropdownlist>
                            </ng-template>
                        </e-column>
                        <e-column field='priority' headerText='Priority' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData?: object | any;
    public selectDatasource:any=dropdowndata;
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['taskName'] = this.taskData['taskName'];
        }
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];

export let dropdowndata =['Planning','Plan timeline','Plan budget','Allocate resources','Planning complete',
'Design','Software Specification','Develop prototype', 'Get approval from customer','Design Documentation','Design complete',
'Implementation Phase','Phase 1','Implementation Module 1','Development Task 1', 'Development Task 2','Testing',
'Bug fix','Customer review meeting', 'Phase 1 complete', 'Phase 2','Implementation Module 2','Phase 2 complete', 
'Phase 3','Implementation Module 3', 'Phase 3 complete',
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render images in the DropDownList editor component using the item template

The Tree Grid allows you to render images in the DropDownList editor component. This feature is valuable when you want to display images for each item in the dropdown list of a particular column, enhancing the visual representation of your data.

To render a DropDownList in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

To display an image in the DropDownList editor component, you can utilize the itemTemplate property. This property allows you to customize the content of each item in the dropdown list.

The following example demonstrates how to render images in the DropDownList editor component using the itemTemplate within the EmployeeID column of the Syncfusion Grid. Additionally, the actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { DropDownListModule } from '@syncfusion/ej2-angular-dropdowns';
import { Component, OnInit ,ViewChild} from '@angular/core';
import { textdata,dd_data} from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';

@Component({
    imports: [
    TreeGridAllModule,DropDownListModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='2' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='Children' >
                    <e-columns>
                        <e-column field='EmpID' headerText='Employee ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field="EmployeeID"  headerText="ID" width="220">
                            <ng-template #editTemplate let-data>
                                <ejs-dropdownlist [dataSource]='employeeData' [(ngModel)]="taskData.EmployeeID" [fields]='dropdownFields' [itemTemplate]="itemTemplate">
                                    <ng-template #itemTemplate let-data>
                                        <div>
                                            <img class="empImage" width="50px" [src]="'https://ej2.syncfusion.com/demos/src/grid/images/' + data.EmployeeID + '.png'" alt="employee" />
                                            <div class="ename"></div>
                                        </div>
                                    </ng-template>
                                </ejs-dropdownlist>
                            </ng-template>
                        </e-column>
                        <e-column field='Name' headerText='Name' width=250></e-column>
                        <e-column field='Country' headerText='Country' width=140></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public employeeData?: object[]=dd_data;
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public dropdownFields?: Object;
    public taskData?: object | any;
    
    ngOnInit(): void {
        this.data = textdata;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.dropdownFields = { text: 'EmployeeID', value: 'EmployeeID' };
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['EmployeeID'] = this.taskData['EmployeeID'];
        }
    }

}
/**
 * TreeGrid DataSource
 */
export let dd_data: Object[] = [{
    'FirstName':'Robert',
    'LastName':'King',
    'Name': 'Robert King',
    'FullName': 'RobertKing',
    'Designation': 'Chief Executive Officer',
    'EmployeeID': '1',
    'EmpID': 'EMP001',
    'Address': '507 - 20th Ave. E.Apt. 2A, Seattle',
    'Contact': '2065559857',
    'Country': 'USA',
    'DOB': new Date('2/15/1963'),

  },{
        'FirstName':'David',
        'LastName':'william',
        'Name': 'David william',
        'FullName': 'DavidWilliam',
        'Designation': 'Vice President',
        'EmployeeID': '2',
        'EmpID': 'EMP004',
        'Address': '722 Moss Bay Blvd., Kirkland',
        'Country': 'USA',
        'Contact': '2065553412',
        'DOB': new Date('5/20/1971'),


 },{
            'FirstName':'Nancy',
            'LastName':'Davolio',
            'Name': 'Nancy Davolio',
            'FullName': 'NancyDavolio',
            'Designation': 'Marketing Executive',
            'EmployeeID': '3',
            'EmpID': 'EMP035',
            'Address': '4110 Old Redmond Rd., Redmond',
            'Country': 'USA',
            'Contact': '2065558122',
            'DOB': new Date('3/19/1966'),
 },
                {
                    'FirstName':'Andrew',
                    'LastName':'Fuller',
                    'Name': 'Andrew Fuller',
                    'FullName': 'AndrewFuller',
                    'Designation': 'Sales Representative',
                    'EmployeeID': '4',
                    'EmpID': 'EMP045',
                    'Address': '14 Garrett Hill, London',
                    'Country': 'UK',
                    'Contact': '7155544848',
                    'DOB': new Date('9/20/1980')
                },
            {
                'FirstName':'Anne',
                'LastName':'Dodsworth',
                'Name': 'Anne Dodsworth',
                'FullName': 'AnneDodsworth',
                'Designation': 'Sales Representative',
                'EmployeeID': '5',
                'EmpID': 'EMP091',
                'Address': '4726 - 11th Ave. N.E., Seattle',
                'Country': 'USA',
                'Contact': '2065551189',
                'DOB': new Date('10/19/1989')
            },
            {
                'FirstName':'Michael',
                'LastName':'Suyama',
                'Name': 'Michael Suyama',
                'FullName': 'MichaelSuyama',
                'Designation': 'Sales Representative',
                'EmployeeID': '6',
                'EmpID': 'EMP110',
                'Address': 'Coventry House Miner Rd., London',
                'Country': 'UK',
                'Contact': '7145553636',
                'DOB': new Date('11/02/1987')
            },
            {
                'FirstName':'Janet',
                'LastName':'Leverling',
                'Name': 'Janet Leverling',
                'FullName': 'JanetLeverling',
                'Designation': 'Sales Coordinator',
                'EmployeeID': '7',
                'EmpID': 'EMP131',
                'Address': 'Edgeham Hollow Winchester Way, London',
                'Country': 'UK',
                'Contact': '7145553636',
                'DOB': new Date('11/06/1990')
            },
           
        {
            'FirstName':'Romey',
            'LastName':'Wilson',
            'Name': 'Romey Wilson',
            'FullName': 'RomeyWilson',
            'Designation': 'Sales Executive',
            'EmployeeID': '8',
            'EmpID': 'EMP039',
            'Address': '7 Houndstooth Rd., London',
            'Country': 'UK',
            'Contact': '7125553690',
            'DOB': new Date('02/02/1980'),
        },
            {
                'FirstName':'Margaret',
                'LastName':'Peacock',
                'Name': 'Margaret Peacock',
                'FullName': 'MargaretPeacock',
                'Designation': 'Sales Representative',
                'EmployeeID': '9',
                'EmpID': 'EMP213',
                'Address': '4726 - 11th Ave. N.E., California',
                'Country': 'USA',
                'Contact': '2065551989',
                'DOB': new Date('01/21/1986')
            },
            {
                'FirstName':'Laura',
                'LastName':'Callahan',
                'Name': 'Laura Callahan',
                'FullName': 'LauraCallahan',
                'Designation': 'Sales Coordinator',
                'EmployeeID': '10',
                'EmpID': 'EMP201',
                'Address': 'Coventry House Miner Rd., London',
                'Country': 'UK',
                'Contact': '7145552222',
                'DOB': new Date( '12/01/1990')
            },
            {
                'FirstName':'Steven',
                'LastName':'Buchanan',
                'Name': 'Steven Buchanan',
                'FullName': 'StevenBuchanan',
                'Designation': 'Sales Representative',
                'EmployeeID': '11',
                'EmpID': 'EMP197',
                'Address': '200 Lincoln Ave, Salinas, CA 93901',
                'Country': 'USA',
                'Contact': '1737587408',
                'DOB': new Date('03/23/1987')
            },
            {
                'FirstName':'Tedd',
                'LastName':'Lawson',
                'Name': 'Tedd Lawson',
                'FullName': 'TeddLawson',
                'Designation': 'Sales Representative',
                'EmployeeID': '12',
                'EmpID': 'EMP167',
                'Address': '200 Lincoln Ave, Salinas, CA 93901',
                'Country': 'USA',
                'Contact': '1737587368 ',
                'DOB': new Date('08/09/1989')
            },
            ];
        
  export let textdata: Object[] = [{
      'FirstName':'Robert',
      'LastName':'King',
      'Name': 'Robert King',
      'FullName': 'RobertKing',
      'Designation': 'Chief Executive Officer',
      'EmployeeID': '1',
      'EmpID': 'EMP001',
      'Address': '507 - 20th Ave. E.Apt. 2A, Seattle',
      'Contact': '2065559857',
      'Country': 'USA',
      'DOB': new Date('2/15/1963'),
  
      'Children': [{
          'FirstName':'David',
          'LastName':'william',
          'Name': 'David william',
          'FullName': 'DavidWilliam',
          'Designation': 'Vice President',
          'EmployeeID': '2',
          'EmpID': 'EMP004',
          'Address': '722 Moss Bay Blvd., Kirkland',
          'Country': 'USA',
          'Contact': '2065553412',
          'DOB': new Date('5/20/1971'),
  
  
          'Children': [{
              'FirstName':'Nancy',
              'LastName':'Davolio',
              'Name': 'Nancy Davolio',
              'FullName': 'NancyDavolio',
              'Designation': 'Marketing Executive',
              'EmployeeID': '3',
              'EmpID': 'EMP035',
              'Address': '4110 Old Redmond Rd., Redmond',
              'Country': 'USA',
              'Contact': '2065558122',
              'DOB': new Date('3/19/1966'),
              'Children': [
                  {
                      'FirstName':'Andrew',
                      'LastName':'Fuller',
                      'Name': 'Andrew Fuller',
                      'FullName': 'AndrewFuller',
                      'Designation': 'Sales Representative',
                      'EmployeeID': '4',
                      'EmpID': 'EMP045',
                      'Address': '14 Garrett Hill, London',
                      'Country': 'UK',
                      'Contact': '7155544848',
                      'DOB': new Date('9/20/1980')
                  },
              {
                  'FirstName':'Anne',
                  'LastName':'Dodsworth',
                  'Name': 'Anne Dodsworth',
                  'FullName': 'AnneDodsworth',
                  'Designation': 'Sales Representative',
                  'EmployeeID': '5',
                  'EmpID': 'EMP091',
                  'Address': '4726 - 11th Ave. N.E., Seattle',
                  'Country': 'USA',
                  'Contact': '2065551189',
                  'DOB': new Date('10/19/1989')
              },
              {
                  'FirstName':'Michael',
                  'LastName':'Suyama',
                  'Name': 'Michael Suyama',
                  'FullName': 'MichaelSuyama',
                  'Designation': 'Sales Representative',
                  'EmployeeID': '6',
                  'EmpID': 'EMP110',
                  'Address': 'Coventry House Miner Rd., London',
                  'Country': 'UK',
                  'Contact': '7145553636',
                  'DOB': new Date('11/02/1987')
              },
              {
                  'FirstName':'Janet',
                  'LastName':'Leverling',
                  'Name': 'Janet Leverling',
                  'FullName': 'JanetLeverling',
                  'Designation': 'Sales Coordinator',
                  'EmployeeID': '7',
                  'EmpID': 'EMP131',
                  'Address': 'Edgeham Hollow Winchester Way, London',
                  'Country': 'UK',
                  'Contact': '7145553636',
                  'DOB': new Date('11/06/1990')
              },
              ]
  
          },
          {
              'FirstName':'Romey',
              'LastName':'Wilson',
              'Name': 'Romey Wilson',
              'FullName': 'RomeyWilson',
              'Designation': 'Sales Executive',
              'EmployeeID': '8',
              'EmpID': 'EMP039',
              'Address': '7 Houndstooth Rd., London',
              'Country': 'UK',
              'Contact': '7125553690',
              'DOB': new Date('02/02/1980'),
              'Children': [
              {
                  'FirstName':'Margaret',
                  'LastName':'Peacock',
                  'Name': 'Margaret Peacock',
                  'FullName': 'MargaretPeacock',
                  'Designation': 'Sales Representative',
                  'EmployeeID': '9',
                  'EmpID': 'EMP213',
                  'Address': '4726 - 11th Ave. N.E., California',
                  'Country': 'USA',
                  'Contact': '2065551989',
                  'DOB': new Date('01/21/1986')
              },
              {
                  'FirstName':'Laura',
                  'LastName':'Callahan',
                  'Name': 'Laura Callahan',
                  'FullName': 'LauraCallahan',
                  'Designation': 'Sales Coordinator',
                  'EmployeeID': '10',
                  'EmpID': 'EMP201',
                  'Address': 'Coventry House Miner Rd., London',
                  'Country': 'UK',
                  'Contact': '7145552222',
                  'DOB': new Date( '12/01/1990')
              },
              {
                  'FirstName':'Steven',
                  'LastName':'Buchanan',
                  'Name': 'Steven Buchanan',
                  'FullName': 'StevenBuchanan',
                  'Designation': 'Sales Representative',
                  'EmployeeID': '11',
                  'EmpID': 'EMP197',
                  'Address': '200 Lincoln Ave, Salinas, CA 93901',
                  'Country': 'USA',
                  'Contact': '1737587408',
                  'DOB': new Date('03/23/1987')
              },
              {
                  'FirstName':'Tedd',
                  'LastName':'Lawson',
                  'Name': 'Tedd Lawson',
                  'FullName': 'TeddLawson',
                  'Designation': 'Sales Representative',
                  'EmployeeID': '12',
                  'EmpID': 'EMP167',
                  'Address': '200 Lincoln Ave, Salinas, CA 93901',
                  'Country': 'USA',
                  'Contact': '1737587368 ',
                  'DOB': new Date('08/09/1989')
              },
              ]
          }]
      }]
  }];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render Multiple columns in DropDownList component

The Tree Grid allows you to render a DropDownList component within the tree grid’s edit form for a specific column. This feature is particularly useful when you want to display more detailed information for each item in the dropdown list during editing a specific column.

To render a DropDownList in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

The DropDownList has been provided with several options to customize each list item, group title, selected value, header, and footer element. By default, list items can be rendered as a single column in the DropDownList component. Instead of this, multiple columns can be rendered. This can be achieved by using the headerTemplate and itemTemplate properties of the DropDownList component.

The following example demonstrates how to render a DropDownList component with multiple columns within in the Task Name column. The actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { Component, OnInit} from '@angular/core';
import { sampleData ,drop_Data} from './datasource';
import { EditSettingsModel, ToolbarItems ,EditService, ToolbarService, PageService} from '@syncfusion/ej2-angular-treegrid';
import { Query } from '@syncfusion/ej2-data';
@Component({
    imports: [
    TreeGridAllModule,DropDownListModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' textAlign='Left' width=250>
                            <ng-template #editTemplate let-data3>
                                <ejs-dropdownlist [dataSource]='datas' [fields]='fields' [(value)]="taskData.taskName">
                                    <ng-template #headerTemplate="" let-data2="">
                                        <table><tr><th>Task ID</th><th>Task Name</th></tr></table>
                                    </ng-template>
                                    <ng-template #itemTemplate let-data1>
                                        <div class="e-grid">
                                            <table class="e-table">
                                                <tbody>
                                                    <tr>
                                                        <td class="e-rowcell">{{data1.taskID}}</td>
                                                        <td class="e-rowcell">{{data1.taskName}}</td>
                                                    </tr>
                                                </tbody>
                                            </table>
                                        </div>
                                    </ng-template>
                                </ejs-dropdownlist>
                            </ng-template>
                        </e-column>
                        <e-column field='priority' headerText='Priority' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData?: object | any;
    public datas:any=drop_Data;
    public fields = { text: 'taskName' };
    public query: Query = new Query()
        .from('datas')
        .select(['taskName', 'taskID'])
        .take(6);

    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['taskName'] = this.taskData['taskName'];
        }
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5.67,
        priority: 'Normal',
        approved: false,
        postalCode:'87650',
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'), postalCode:'76543',
                endDate: new Date('02/07/2017'), duration: 15.87, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'), postalCode:'65329',
                endDate: new Date('02/07/2017'), duration: 64.98, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),postalCode:'87654',
                endDate: new Date('02/07/2017'), duration: 34.90, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),postalCode:'87321',
                endDate: new Date('02/07/2017'), duration: 22.77, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 37.98,
        progress: 86,
        priority: 'High',
        approved: false,
        postalCode:'65709',
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),postalCode:'90876',
                endDate: new Date('02/12/2017'), duration: 45.95, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),postalCode:'89075',
                endDate: new Date('02/12/2017'), duration: 24.86, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),postalCode:'67808',
                endDate: new Date('02/14/2017'), duration: 28.94, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),postalCode:'76543',
                endDate: new Date('02/14/2017'), duration: 26.92, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'), postalCode:'563489',
                endDate: new Date('02/14/2017'), duration: 37.76, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11.76,
        progress: 66,
        postalCode:'987654',
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 15.86,
                postalCode:'87654',
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 16.89,
                    progress: 10,
                    approved: false,
                    postalCode:'98765',
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'98345',
                            endDate: new Date('02/19/2017'), duration: 67.89, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'54678',
                            endDate: new Date('02/19/2017'), duration: 45.96, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87654',
                            endDate: new Date('02/21/2017'), duration: 64.97, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'65432',
                            endDate: new Date('02/25/2017'), duration: 33.67, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'97625',
                            endDate: new Date('02/27/2017'), duration: 25.34, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),postalCode:'65109',
                            endDate: new Date('02/27/2017'), duration: 89.76, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12.78,
                postalCode:'76543',
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 67.98,
                    postalCode:'76541',
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'61239',
                            endDate: new Date('02/20/2017'), duration: 64.87, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'74190',
                            endDate: new Date('02/20/2017'), duration: 75.29, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),postalCode:'27906',
                            endDate: new Date('02/24/2017'), duration: 65.23, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),postalCode:'25679',
                            endDate: new Date('02/26/2017'), duration: 78.92, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),postalCode:'43218',
                            endDate: new Date('02/28/2017'), duration: 56.98, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),postalCode:'59075',
                            endDate: new Date('02/28/2017'), duration: 34.70, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11.86,
                progress: 30,
                postalCode:'90876',
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 65.72,
                    progress: 60,
                    postalCode:'58908',
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'65218',
                            endDate: new Date('02/19/2017'), duration:45.03, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'65190',
                            endDate: new Date('02/19/2017'), duration: 65.29, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87642',
                            endDate: new Date('02/21/2017'), duration: 89.56, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'93160',
                            endDate: new Date('02/25/2017'), duration: 73.68, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'76410',
                            endDate: new Date('02/27/2017'), duration: 92.58, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),postalCode:'83219',
                            endDate: new Date('02/27/2017'), duration: 75.89, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
  export let drop_Data: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        },
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),
                endDate: new Date('02/07/2017'), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),
                endDate: new Date('02/07/2017'), duration: 0, progress: 0, priority: 'Low', approved: true }

    ,
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
       },
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),
                endDate: new Date('02/12/2017'), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),
                endDate: new Date('02/14/2017'), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'),
                endDate: new Date('02/14/2017'), duration: 0, progress: 0, priority: 'Normal', approved: true }
       ,
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        },
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                },{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                   },
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ,
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
               },{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                   },
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/20/2017'), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),
                            endDate: new Date('02/24/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),
                            endDate: new Date('02/26/2017'), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/28/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),
                            endDate: new Date('02/28/2017'), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ,

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                },{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    },
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),
                            endDate: new Date('02/19/2017'), duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),
                            endDate: new Date('02/21/2017'), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),
                            endDate: new Date('02/25/2017'), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),
                            endDate: new Date('02/27/2017'), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),
                            endDate: new Date('02/27/2017'), duration: 0, progress: '50', priority: 'Critical', approved: false },
                   
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render ComboBox component in edit form

The Tree Grid allows you to render a ComboBox component within the tree grid’s edit form for a specific column. This feature is especially valuable when you need to provide a drop-down selection with auto-suggestions for data entry.

To render a comboBox component in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

The following example demonstrates how to render a ComboBox component in the Task Name column of the tree grid. The actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { ComboBoxModule  } from '@syncfusion/ej2-angular-dropdowns';

import { Component, OnInit} from '@angular/core';
import { sampleData ,dropdowndata} from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService } from '@syncfusion/ej2-angular-treegrid';
import { Query } from '@syncfusion/ej2-data';

@Component({
    imports: [
    TreeGridAllModule,ComboBoxModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' textAlign='Left' width=250>
                            <ng-template #editTemplate let-data>
                                <ejs-combobox [dataSource]='selectDatasource' [(ngModel)]='taskData.taskName'></ejs-combobox>
                            </ng-template>
                        </e-column>
                        <e-column field='priority' headerText='Priority' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData?: object | any;
    public selectDatasource:any=dropdowndata;
   
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['taskName'] = this.taskData['taskName'];
        }
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5.67,
        priority: 'Normal',
        approved: false,
        postalCode:'87650',
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'), postalCode:'76543',
                endDate: new Date('02/07/2017'), duration: 15.87, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'), postalCode:'65329',
                endDate: new Date('02/07/2017'), duration: 64.98, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),postalCode:'87654',
                endDate: new Date('02/07/2017'), duration: 34.90, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),postalCode:'87321',
                endDate: new Date('02/07/2017'), duration: 22.77, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 37.98,
        progress: 86,
        priority: 'High',
        approved: false,
        postalCode:'65709',
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),postalCode:'90876',
                endDate: new Date('02/12/2017'), duration: 45.95, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),postalCode:'89075',
                endDate: new Date('02/12/2017'), duration: 24.86, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),postalCode:'67808',
                endDate: new Date('02/14/2017'), duration: 28.94, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),postalCode:'76543',
                endDate: new Date('02/14/2017'), duration: 26.92, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'), postalCode:'563489',
                endDate: new Date('02/14/2017'), duration: 37.76, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11.76,
        progress: 66,
        postalCode:'987654',
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 15.86,
                postalCode:'87654',
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 16.89,
                    progress: 10,
                    approved: false,
                    postalCode:'98765',
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'98345',
                            endDate: new Date('02/19/2017'), duration: 67.89, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'54678',
                            endDate: new Date('02/19/2017'), duration: 45.96, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87654',
                            endDate: new Date('02/21/2017'), duration: 64.97, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'65432',
                            endDate: new Date('02/25/2017'), duration: 33.67, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'97625',
                            endDate: new Date('02/27/2017'), duration: 25.34, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),postalCode:'65109',
                            endDate: new Date('02/27/2017'), duration: 89.76, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12.78,
                postalCode:'76543',
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 67.98,
                    postalCode:'76541',
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'61239',
                            endDate: new Date('02/20/2017'), duration: 64.87, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'74190',
                            endDate: new Date('02/20/2017'), duration: 75.29, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),postalCode:'27906',
                            endDate: new Date('02/24/2017'), duration: 65.23, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),postalCode:'25679',
                            endDate: new Date('02/26/2017'), duration: 78.92, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),postalCode:'43218',
                            endDate: new Date('02/28/2017'), duration: 56.98, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),postalCode:'59075',
                            endDate: new Date('02/28/2017'), duration: 34.70, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11.86,
                progress: 30,
                postalCode:'90876',
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 65.72,
                    progress: 60,
                    postalCode:'58908',
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'65218',
                            endDate: new Date('02/19/2017'), duration:45.03, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'65190',
                            endDate: new Date('02/19/2017'), duration: 65.29, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87642',
                            endDate: new Date('02/21/2017'), duration: 89.56, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'93160',
                            endDate: new Date('02/25/2017'), duration: 73.68, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'76410',
                            endDate: new Date('02/27/2017'), duration: 92.58, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),postalCode:'83219',
                            endDate: new Date('02/27/2017'), duration: 75.89, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];

export let dropdowndata =['Planning','Plan timeline','Plan budget','Allocate resources','Planning complete',
'Design','Software Specification','Develop prototype', 'Get approval from customer','Design Documentation','Design complete',
'Implementation Phase','Phase 1','Implementation Module 1','Development Task 1', 'Development Task 2','Testing',
'Bug fix','Customer review meeting', 'Phase 1 complete', 'Phase 2','Implementation Module 2','Phase 2 complete', 
'Phase 3','Implementation Module 3', 'Phase 3 complete',
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render TimePicker component in edit form

The Tree Grid allows you to render a TimePicker component within the tree grid’s edit form for a specific column. This feature is especially valuable when you need to provide a time input, such as appointment times, event schedules, or any other time-related data for editing in the tree grid.

To render a TimePicker component in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

The following example demonstrates how to render a TimePicker component in the startDate column of the tree grid. The actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { Component, OnInit} from '@angular/core';
import { sampleData1 } from './datasource';
import { TimePickerModule } from '@syncfusion/ej2-angular-calendars';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService  } from '@syncfusion/ej2-angular-treegrid';
import { Query } from '@syncfusion/ej2-data';
@Component({
    imports: [
    TreeGridAllModule,TimePickerModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' textAlign='Left' width=250></e-column>
                        <e-column field='startDate' headerText='Start Time' width='140' format='hh :mm a' textAlign='Right'>
                            <ng-template #editTemplate let-data>
                                <ejs-timepicker   [(value)]='taskData.startDate'></ejs-timepicker >
                            </ng-template>
                        </e-column>
                        <e-column field='priority' headerText='Priority' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData?: object | any;
     
    ngOnInit(): void {
        this.data = sampleData1;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['startDate'] = this.taskData['startDate'];
        }
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData1: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate:  new Date(1696937e6),
        endDate: new Date(1598763e6),
        progress: 100,
        duration: 5,
        priority: 'Normal',
        approved: false,
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date(1536944e6), 
                endDate: new Date(1536951e6), duration: 5, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date(1537951e6), 
                endDate:  new Date(1538951e6), duration: 5, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date(1536958e6), 
                endDate: new Date(1535565e6), duration: 5, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date(1538751e6),
                endDate: new Date(1537781e6), duration: 0, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date(1638958e6),
        endDate: new Date(1636679e6),
        duration: 3,
        progress: 86,
        priority: 'High',
        approved: false,
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date(1634965e6),
                endDate: new Date(1636586e6), duration: 3, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate:new Date(1637972e6),
                endDate: new Date(1638993e6), duration: 3, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date(1633979e6),
                endDate: new Date(1637800e6), duration: 2, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate:  new Date(1636986e6), 
                endDate: new Date(1637027e6), duration: 2, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date(1636393e6),  
                endDate: new Date(1637314e6), duration: 0, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate:  new Date(1637000e6),
        endDate: new Date(1637021e6),
        priority: 'Normal',
        approved: false,
        duration: 11,
        progress: 66,
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date(1637607e6),
                endDate: new Date(16370548e6),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 11,
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date(1637714e6),
                    endDate: new Date(16370235e6),
                    priority: 'Normal',
                    duration: 11,
                    progress: 10,
                    approved: false,
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date(1737021e6),
                            endDate:  new Date(1737042e6), duration: 3, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2023'),
                            endDate:  new Date(1737635e6),  duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date(1737028e6),
                            endDate:new Date(17372328e6),duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date(1737035e6),
                            endDate: new Date(1737621e6),  duration: 2, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date(1737042e6),
                            endDate:  new Date(1735014e6), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date(1737035e6),
                            endDate:  new Date(1737057e6), duration: 0, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date(1737028e6),
                endDate: new Date(1737050e6),
                priority: 'High',
                approved: false,
                duration: 12,
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date(1735021e6),
                    endDate: new Date(1736993e6),
                    priority: 'Critical',
                    approved: false,
                    duration: 12,
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date(1737014e6),
                            endDate: new Date(1737007e6), duration: 4, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date(1736007e6),
                            endDate: new Date(1735014e6), duration: 4, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date(1737000e6),
                            endDate:  new Date(1734021e6), duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate:  new Date(1737993e6),
                            endDate: new Date(1733028e6), duration: 2, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date(1736886e6),
                            endDate:  new Date(1736986e6), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date(1735979e6),
                            endDate: new Date(1733979e6), duration: 0, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate:  new Date(1736971e6),
                endDate: new Date(1736972e6), 
                priority: 'Normal',
                approved: false,
                duration: 11,
                progress: 30,
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date(1736965e6),
                    endDate: new Date(1736965e6),
                    priority: 'High',
                    approved: false,
                    duration: 11,
                    progress: 60,
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date(1736957e6),
                            endDate: new Date(1736958e6), duration: 3, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate:  new Date(1736951e6),
                            endDate: new Date(1736951e6),  duration: 3, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate:new Date(1736943e6),
                            endDate: new Date(1736944e6), duration: 2, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date(1736937e6),
                            endDate: new Date(1736937e6),  duration: 2, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate:  new Date(1736944e6),
                            endDate:  new Date(1736943e6), duration: 2, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate:  new Date(1736944e6),
                            endDate:  new Date(1736951e6),duration: 0, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render MultiSelect component in edit form

The Tree Grid allows you to render a MultiSelect component within the tree grid’s edit form, enabling you to select multiple values from a dropdown list when editing a specific column. This feature is particularly useful when you need to handle situations where multiple selections are required for a column.

To render a MultiSelect component in the edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

The following example demonstrates how to render a MultiSelect component in the Task Name column of the tree grid. The actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { MultiSelectModule } from '@syncfusion/ej2-angular-dropdowns';
import { Component, OnInit} from '@angular/core';
import { sampleData,multiselectdata  } from './datasource';
import { EditSettingsModel, ToolbarItems,EditService, ToolbarService, PageService  } from '@syncfusion/ej2-angular-treegrid';

import { Query } from '@syncfusion/ej2-data';
@Component({
    imports: [
    TreeGridAllModule,MultiSelectModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' textAlign='Left' width=250>
                            <ng-template #editTemplate let-data>
                                <ejs-multiselect [dataSource]='multiselectDatasource'  [fields]='fields' [(value)]="taskData.taskName" ></ejs-multiselect>
                            </ng-template>
                        </e-column>
                        <e-column field='priority' headerText='Priority' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData: { taskName: string[] } = { taskName: [] };
    public multiselectDatasource = multiselectdata;
    public fields = { value: 'value', text: 'text' };

    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
            (this.taskData as any)['taskName'] = (this.taskData as any)['taskName']? ((this.taskData as any)['taskName'] as any).split(','):[];
        }
        if (args.requestType === 'save') {
            (args.data as any)['taskName'] = this.taskData['taskName'].join(',');  ;
        }
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5.67,
        priority: 'Normal',
        approved: false,
        postalCode:'87650',
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'), postalCode:'76543',
                endDate: new Date('02/07/2017'), duration: 15.87, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'), postalCode:'65329',
                endDate: new Date('02/07/2017'), duration: 64.98, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),postalCode:'87654',
                endDate: new Date('02/07/2017'), duration: 34.90, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),postalCode:'87321',
                endDate: new Date('02/07/2017'), duration: 22.77, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 37.98,
        progress: 86,
        priority: 'High',
        approved: false,
        postalCode:'65709',
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),postalCode:'90876',
                endDate: new Date('02/12/2017'), duration: 45.95, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),postalCode:'89075',
                endDate: new Date('02/12/2017'), duration: 24.86, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),postalCode:'67808',
                endDate: new Date('02/14/2017'), duration: 28.94, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),postalCode:'76543',
                endDate: new Date('02/14/2017'), duration: 26.92, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'), postalCode:'563489',
                endDate: new Date('02/14/2017'), duration: 37.76, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11.76,
        progress: 66,
        postalCode:'987654',
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 15.86,
                postalCode:'87654',
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 16.89,
                    progress: 10,
                    approved: false,
                    postalCode:'98765',
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'98345',
                            endDate: new Date('02/19/2017'), duration: 67.89, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'54678',
                            endDate: new Date('02/19/2017'), duration: 45.96, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87654',
                            endDate: new Date('02/21/2017'), duration: 64.97, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'65432',
                            endDate: new Date('02/25/2017'), duration: 33.67, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'97625',
                            endDate: new Date('02/27/2017'), duration: 25.34, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),postalCode:'65109',
                            endDate: new Date('02/27/2017'), duration: 89.76, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12.78,
                postalCode:'76543',
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 67.98,
                    postalCode:'76541',
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'61239',
                            endDate: new Date('02/20/2017'), duration: 64.87, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'74190',
                            endDate: new Date('02/20/2017'), duration: 75.29, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),postalCode:'27906',
                            endDate: new Date('02/24/2017'), duration: 65.23, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),postalCode:'25679',
                            endDate: new Date('02/26/2017'), duration: 78.92, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),postalCode:'43218',
                            endDate: new Date('02/28/2017'), duration: 56.98, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),postalCode:'59075',
                            endDate: new Date('02/28/2017'), duration: 34.70, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11.86,
                progress: 30,
                postalCode:'90876',
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 65.72,
                    progress: 60,
                    postalCode:'58908',
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'65218',
                            endDate: new Date('02/19/2017'), duration:45.03, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'65190',
                            endDate: new Date('02/19/2017'), duration: 65.29, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87642',
                            endDate: new Date('02/21/2017'), duration: 89.56, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'93160',
                            endDate: new Date('02/25/2017'), duration: 73.68, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'76410',
                            endDate: new Date('02/27/2017'), duration: 92.58, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),postalCode:'83219',
                            endDate: new Date('02/27/2017'), duration: 75.89, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];

export let multiselectdata=[
    { value: 'Planning', text: 'Planning' },
    { value: 'Plan timeline', text: 'Plan timeline' },
    { value: 'Plan budget', text: 'Plan budget' },
    { value: 'Allocate resources', text: 'Allocate resources' },
    { value: 'Planning complete', text: 'Planning complete' },
    { value: 'Design', text: 'Design' },
    { value: 'Software Specification', text: 'Software Specification' },
    { value: 'Develop prototype', text: 'Develop prototype' },
    { value: 'Get approval from customer', text: 'Get approval from customer' },
    { value: 'Design Documentation', text: 'Design Documentation' },
    { value: 'Design complete', text: 'Design complete' },
    { value: 'Implementation Phase', text: 'Implementation Phase' },
    { value: 'Phase 1', text: 'Phase 1' },
    { value: 'Implementation Module 1', text: 'Implementation Module 1' },
    { value: 'Development Task 1', text: 'Development Task 1' },
    { value: 'Development Task 2', text: 'Development Task 2' },
    { value: 'Testing', text: 'Testing' },
    { value: 'Bug fix', text: 'Bug fix' },
    { value: 'Customer review meeting', text: 'Customer review meeting' },
    { value: 'Phase 1 complete', text: 'Phase 1 complete' },
    { value: 'Phase 2', text: 'Phase 2' },
    { value: 'Implementation Module 2', text: 'Implementation Module 2' },
    { value: 'Phase 2 complete', text: 'Phase 2 complete' },
    { value: 'Phase 3', text: 'Phase 3' },
    { value: 'Implementation Module 3', text: 'Implementation Module 3' },
    { value: 'Phase 3 complete', text: 'Phase 3 complete' },
   
  ];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render RichTextEditor component in edit form

The Tree Grid allows you to render the RichTextEditor component within the edit form. This feature is valuable when you need to format and style text content using various formatting options such as bold, italic, underline, bullet lists, numbered lists, and more during editing a specific column.

To render RichTextEditor component in edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

Additionally, you need set the allowTextWrap property of the corresponding tree grid column to true. By enabling this property, the rich text editor component will automatically adjust its width and wrap the text content to fit within the boundaries of the column.

The following example demonstrates how to render a RichTextEditor component in the taskName column of the tree grid. The actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { Component, OnInit} from '@angular/core';
import { sampleData,multiselectdata  } from './datasource';
import { EditSettingsModel, ToolbarItems ,EditService, ToolbarService, PageService} from '@syncfusion/ej2-angular-treegrid';
import { Query } from '@syncfusion/ej2-data';
import { FocusInEventArgs } from '@syncfusion/ej2-angular-inputs';
import { RichTextEditorAllModule } from '@syncfusion/ej2-angular-richtexteditor';
@Component({
    imports: [
    TreeGridAllModule,RichTextEditorAllModule
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' textAlign='Left' width=250 editType="textarea" [disableHtmlEncode]="false" allowTextwrap=true>
                            <ng-template #editTemplate let-data1>
                                <div *ngIf="taskData && taskData.taskName !== undefined">
                                    <ejs-richtexteditor id="rteEdit" [(value)]="taskData.taskName" (focus)="onFocus($event)" #rteEdit></ejs-richtexteditor>
                                </div>
                            </ng-template>
                        </e-column>
                        <e-column field='priority' headerText='Priority' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData: object | any;
  
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as any)['taskName'] = this.taskData['taskName'];
        }
    }

    onFocus(args: FocusInEventArgs): void {
        ((args.event as Event).target as EventTarget).addEventListener('keydown', (e) => {
            if ((e as KeyboardEvent).key === 'Enter') {
                e.stopPropagation();
            }
        });
    }
}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5.67,
        priority: 'Normal',
        approved: false,
        postalCode:'87650',
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'), postalCode:'76543',
                endDate: new Date('02/07/2017'), duration: 15.87, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'), postalCode:'65329',
                endDate: new Date('02/07/2017'), duration: 64.98, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),postalCode:'87654',
                endDate: new Date('02/07/2017'), duration: 34.90, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),postalCode:'87321',
                endDate: new Date('02/07/2017'), duration: 22.77, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 37.98,
        progress: 86,
        priority: 'High',
        approved: false,
        postalCode:'65709',
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),postalCode:'90876',
                endDate: new Date('02/12/2017'), duration: 45.95, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),postalCode:'89075',
                endDate: new Date('02/12/2017'), duration: 24.86, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),postalCode:'67808',
                endDate: new Date('02/14/2017'), duration: 28.94, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),postalCode:'76543',
                endDate: new Date('02/14/2017'), duration: 26.92, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'), postalCode:'563489',
                endDate: new Date('02/14/2017'), duration: 37.76, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11.76,
        progress: 66,
        postalCode:'987654',
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 15.86,
                postalCode:'87654',
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 16.89,
                    progress: 10,
                    approved: false,
                    postalCode:'98765',
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'98345',
                            endDate: new Date('02/19/2017'), duration: 67.89, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'54678',
                            endDate: new Date('02/19/2017'), duration: 45.96, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87654',
                            endDate: new Date('02/21/2017'), duration: 64.97, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'65432',
                            endDate: new Date('02/25/2017'), duration: 33.67, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'97625',
                            endDate: new Date('02/27/2017'), duration: 25.34, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),postalCode:'65109',
                            endDate: new Date('02/27/2017'), duration: 89.76, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12.78,
                postalCode:'76543',
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 67.98,
                    postalCode:'76541',
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'61239',
                            endDate: new Date('02/20/2017'), duration: 64.87, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'74190',
                            endDate: new Date('02/20/2017'), duration: 75.29, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),postalCode:'27906',
                            endDate: new Date('02/24/2017'), duration: 65.23, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),postalCode:'25679',
                            endDate: new Date('02/26/2017'), duration: 78.92, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),postalCode:'43218',
                            endDate: new Date('02/28/2017'), duration: 56.98, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),postalCode:'59075',
                            endDate: new Date('02/28/2017'), duration: 34.70, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11.86,
                progress: 30,
                postalCode:'90876',
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 65.72,
                    progress: 60,
                    postalCode:'58908',
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'65218',
                            endDate: new Date('02/19/2017'), duration:45.03, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'65190',
                            endDate: new Date('02/19/2017'), duration: 65.29, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87642',
                            endDate: new Date('02/21/2017'), duration: 89.56, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'93160',
                            endDate: new Date('02/25/2017'), duration: 73.68, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'76410',
                            endDate: new Date('02/27/2017'), duration: 92.58, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),postalCode:'83219',
                            endDate: new Date('02/27/2017'), duration: 75.89, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];

export let dropdowndata =['Planning','Plan timeline','Plan budget','Allocate resources','Planning complete',
'Design','Software Specification','Develop prototype', 'Get approval from customer','Design Documentation','Design complete',
'Implementation Phase','Phase 1','Implementation Module 1','Development Task 1', 'Development Task 2','Testing',
'Bug fix','Customer review meeting', 'Phase 1 complete', 'Phase 2','Implementation Module 2','Phase 2 complete', 
'Phase 3','Implementation Module 3', 'Phase 3 complete',
];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render Upload component in edit form

The Tree Grid allows you to render an Upload component within the tree grid’s edit form. This feature is especially valuable when you need to upload and manage files or images in a specific column during data editing.

To render Upload component in edit form, you need to define an editTemplate for the column using ng-template. The editTemplate property specifies the cell edit template that used as an editor for a particular column. It can accept either a template string or an HTML element ID.

The following example demonstrates how to render a Upload component in the Image column of the tree grid. The actionBegin event is handled to update the edited value in the tree grid when the save button is clicked:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { Component, OnInit} from '@angular/core';
import { textdata  } from './datasource';
import { EditSettingsModel, ToolbarItems ,EditService, ToolbarService, PageService} from '@syncfusion/ej2-angular-treegrid';
import { Query } from '@syncfusion/ej2-data';
import { FileInfo, FocusInEventArgs, SuccessEventArgs } from '@syncfusion/ej2-angular-inputs';
import { DomSanitizer, SafeResourceUrl } from '@angular/platform-browser';
import { UploaderModule } from '@syncfusion/ej2-angular-inputs';

@Component({
    imports: [
    TreeGridAllModule,UploaderModule 
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' (actionBegin)='actionBegin($event)' childMapping='Children' >
                    <e-columns>
                        <e-column field='EmpID' headerText='Employee ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='Name' headerText='Name' textAlign='Left' width=250></e-column>
                        <e-column field='Contact' headerText='Contact' width=140></e-column>
                        <e-column headerText='Image' width='150' textAlign='Center'>
                            <ng-template #template let-data>
                                <div class="image">
                                    <img [src]="!data.Image ? 'https://ej2.syncfusion.com/angular/demos/assets/grid/images/' + data.EmployeeID + '.png' : getImageUrl(data.Image)"  alt="" />
                                </div>
                            </ng-template>
                            <ng-template #editTemplate let-data>
                                <ejs-uploader #defaultupload (success)="onUploadSuccess($event)" [asyncSettings]='path' multiple='false'></ejs-uploader>
                            </ng-template>
                        </e-column>
                    </e-columns>
                </ejs-treegrid>`
})

export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData: object | any;
    public strm?:any;
    public path: object = {
        saveUrl: 'https://services.syncfusion.com/react/production/api/FileUploader/Save',
        removeUrl: 'https://services.syncfusion.com/react/production/api/FileUploader/Remove'
    };
    constructor(private sanitizer: DomSanitizer) {
      
     }
     getImageUrl(image: string): SafeResourceUrl {
       
        return this.sanitizer.bypassSecurityTrustResourceUrl(image);
      }
    
    ngOnInit(): void {
        this.data = textdata;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        
    }
    actionBegin(args: any) {
        if (args.requestType === 'beginEdit' || args.type === 'edit' || args.requestType === 'add') {
            (this.taskData as object) = Object.assign({}, args.rowData);
        }
        if (args.requestType === 'save') {
            (args.data as columnDataType)['Image'] = this.strm;
        }
    }
    
    onUploadSuccess(args: SuccessEventArgs) {
        if (args.operation === 'upload') {
            const fileBlob = (args.file as FileInfo).rawFile as Blob;
            const file = new File([fileBlob], (args.file as FileInfo).name);
            this.strm = this.getBase64(file);
        }
    }

    getBase64(file:File): string {
        const reader = new FileReader();
        reader.readAsDataURL(file);
        reader.onload = (e:any) => {
            this.strm = reader.result as string;
            
        };
        
        this.strm=this.sanitizer.bypassSecurityTrustResourceUrl(this.strm);
        return (this.strm as string); 
    }

}
export interface columnDataType{
    Image?: string;
 }
/**
 * TreeGrid DataSource
 */
export let textdata: Object[] = [{
    'FirstName':'Robert',
    'LastName':'King',
    'Name': 'Robert King',
    'FullName': 'RobertKing',
    'Designation': 'Chief Executive Officer',
    'EmployeeID': '1',
    'EmpID': 'EMP001',
    'Address': '507 - 20th Ave. E.Apt. 2A, Seattle',
    'Contact': '2065559857',
    'Country': 'USA',
    'Image':"",
    'DOB': new Date('2/15/1963'),

    'Children': [{
        'FirstName':'David',
        'LastName':'william',
        'Name': 'David william',
        'FullName': 'DavidWilliam',
        'Designation': 'Vice President',
        'EmployeeID': '2',
        'EmpID': 'EMP004',
        'Address': '722 Moss Bay Blvd., Kirkland',
        'Country': 'USA',
        'Contact': '2065553412',
        'DOB': new Date('5/20/1971'),
        'Image':"",

    },{
            'FirstName':'Nancy',
            'LastName':'Davolio',
            'Name': 'Nancy Davolio',
            'FullName': 'NancyDavolio',
            'Designation': 'Marketing Executive',
            'EmployeeID': '3',
            'EmpID': 'EMP035',
            'Address': '4110 Old Redmond Rd., Redmond',
            'Country': 'USA',
            'Contact': '2065558122',
            'Image':"",
            'DOB': new Date('3/19/1966'),
     },
                {
                    'FirstName':'Andrew',
                    'LastName':'Fuller',
                    'Name': 'Andrew Fuller',
                    'FullName': 'AndrewFuller',
                    'Designation': 'Sales Representative',
                    'EmployeeID': '4',
                    'EmpID': 'EMP045',
                    'Address': '14 Garrett Hill, London',
                    'Country': 'UK',
                    'Contact': '7155544848',
                    'Image':"",
                    'DOB': new Date('9/20/1980')
                },
            {
                'FirstName':'Anne',
                'LastName':'Dodsworth',
                'Name': 'Anne Dodsworth',
                'FullName': 'AnneDodsworth',
                'Designation': 'Sales Representative',
                'EmployeeID': '5',
                'EmpID': 'EMP091',
                'Address': '4726 - 11th Ave. N.E., Seattle',
                'Country': 'USA',
                'Image':"",
                'Contact': '2065551189',
                'DOB': new Date('10/19/1989')
            },
            {
                'FirstName':'Michael',
                'LastName':'Suyama',
                'Name': 'Michael Suyama',
                'FullName': 'MichaelSuyama',
                'Designation': 'Sales Representative',
                'EmployeeID': '6',
                'EmpID': 'EMP110',
                'Address': 'Coventry House Miner Rd., London',
                'Country': 'UK',
                'Image':"",
                'Contact': '7145553636',
                'DOB': new Date('11/02/1987')
            },
            {
                'FirstName':'Janet',
                'LastName':'Leverling',
                'Name': 'Janet Leverling',
                'FullName': 'JanetLeverling',
                'Designation': 'Sales Coordinator',
                'EmployeeID': '7',
                'EmpID': 'EMP131',
                'Address': 'Edgeham Hollow Winchester Way, London',
                'Country': 'UK',
                'Image':"",
                'Contact': '7145553636',
                'DOB': new Date('11/06/1990')
          
        }]},
        {
            'FirstName':'Romey',
            'LastName':'Wilson',
            'Name': 'Romey Wilson',
            'FullName': 'RomeyWilson',
            'Designation': 'Sales Executive',
            'EmployeeID': '8',
            'EmpID': 'EMP039',
            'Address': '7 Houndstooth Rd., London',
            'Country': 'UK',
            'Contact': '7125553690',
            'Image':"",
            'DOB': new Date('02/02/1980'),
            'Children': [
            {
                'FirstName':'Margaret',
                'LastName':'Peacock',
                'Name': 'Margaret Peacock',
                'FullName': 'MargaretPeacock',
                'Designation': 'Sales Representative',
                'EmployeeID': '5',
                'EmpID': 'EMP213',
                'Address': '4726 - 11th Ave. N.E., California',
                'Country': 'USA',
                'Contact': '2065551989',
                'Image':"",
                'DOB': new Date('01/21/1986')
            },
            {
                'FirstName':'Laura',
                'LastName':'Callahan',
                'Name': 'Laura Callahan',
                'FullName': 'LauraCallahan',
                'Designation': 'Sales Coordinator',
                'EmployeeID': '6',
                'EmpID': 'EMP201',
                'Address': 'Coventry House Miner Rd., London',
                'Country': 'UK',
                'Image':"",
                'Contact': '7145552222',
                'DOB': new Date( '12/01/1990')
            },
            {
                'FirstName':'Steven',
                'LastName':'Buchanan',
                'Name': 'Steven Buchanan',
                'FullName': 'StevenBuchanan',
                'Designation': 'Sales Representative',
                'EmployeeID': '7',
                'EmpID': 'EMP197',
                'Address': '200 Lincoln Ave, Salinas, CA 93901',
                'Country': 'USA',
                'Image':"",
                'Contact': '1737587408',
                'DOB': new Date('03/23/1987')
            },
            {
                'FirstName':'Tedd',
                'LastName':'Lawson',
                'Name': 'Tedd Lawson',
                'FullName': 'TeddLawson',
                'Designation': 'Sales Representative',
                'EmployeeID': '8',
                'EmpID': 'EMP167',
                'Address': '200 Lincoln Ave, Salinas, CA 93901',
                'Country': 'USA',
                'Contact': '1737587368 ',
                'DOB': new Date('08/09/1989')
            },
            ]
          }];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render custom cell editors using external function

The Tree Grid provides the ability to render custom cell editors, allowing you to add custom components to specific columns in your tree grid using the cell edit template feature. This feature is useful when you need to edit cell values using custom input elements or controls.

To utilize the custom cell editor template feature, you need to implement the following functions:

  • create - It is used to create the element at the time of initialization.

  • write - It is used to create custom component or assign default value at the time of editing.

  • read - It is used to read the value from the component at the time of save.

  • destroy - It is used to destroy the component.

Render AutoComplete component in edit form

The Tree Grid allows you to render the AutoComplete component within the edit form by using the cell edit template feature.This feature enables you to select values from a predefined list during the editing of a specific column. It is especially valuable when you need to provide a dropdown-like auto-suggestion and input assistance for data entry in the tree grid’s columns.

To achieve this, you need to utilize the columns->edit property along with a defined object that specifies the necessary functions for creating, reading, and writing the auto complete component.

The following example demonstrates how to render a Autocomplete component in the Task Name column:

import { NgModule, } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridAllModule } from '@syncfusion/ej2-angular-treegrid';
import { Component, OnInit} from '@angular/core';
import { sampleData ,multiselectdata} from './datasource';
import { EditSettingsModel, ToolbarItems ,EditService, ToolbarService, PageService} from '@syncfusion/ej2-angular-treegrid';
import { Query } from '@syncfusion/ej2-data';
import { AutoComplete } from '@syncfusion/ej2-angular-dropdowns';
import {  IEditCell,  } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    providers: [EditService, ToolbarService, PageService],
    standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' [toolbar]='toolbar' [treeColumnIndex]='1' height='270' [editSettings]='editSettings' childMapping='subtasks' >
                    <e-columns>
                        <e-column field='taskID' headerText='Task ID' [isPrimaryKey]='true' textAlign='Right' width=90></e-column>
                        <e-column field='taskName' headerText='Task Name' [edit]='editParams' textAlign='Left' width=250></e-column>
                        <e-column field='priority' headerText='Priority' textAlign='Right' width=140></e-column>
                        <e-column field='progress' editType= 'numericedit' headerText='Progress' textAlign='Right' width=120></e-column>
                    </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: object[];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public taskData?: object | any;
    public editParams?: IEditCell;
    public inpuEle?: HTMLElement;
    public autoCompleteIns?: AutoComplete;
    public autoCompleteData=multiselectdata;
    public createtaskNameFn = () => {
        this.inpuEle = document.createElement('input');
        return this.inpuEle;
      }
      public destroytaskNameFn = () => {
        this.autoCompleteIns?.destroy();
      }
      public readtaskNameFn = () => {
        return this.autoCompleteIns?.value;
      }
      public writetaskNameFn = (args: any) => {
        this.autoCompleteIns = new AutoComplete({
          allowCustom: true,
          value: args.rowData[args.column.field],
          dataSource: this.autoCompleteData ,
          fields: { value: 'value', text: 'text' },
        });
        this.autoCompleteIns?.appendTo(this.inpuEle);
      }
   
    ngOnInit(): void {
        this.data = sampleData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode:"Row"};
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.editParams = {
            create: this.createtaskNameFn,
            read: this.readtaskNameFn,
            destroy: this.destroytaskNameFn,
            write: this.writetaskNameFn
          };
    }

}
/**
 * TreeGrid DataSource
 */
export let sampleData: Object[] =  [
    {
        taskID: 1,
        taskName: 'Planning',
        startDate: new Date('02/03/2017'),
        endDate: new Date('02/07/2017'),
        progress: 100,
        duration: 5.67,
        priority: 'Normal',
        approved: false,
        postalCode:'87650',
        subtasks: [
            { taskID: 2, taskName: 'Plan timeline', startDate: new Date('02/03/2017'), postalCode:'76543',
                endDate: new Date('02/07/2017'), duration: 15.87, progress: 100, priority: 'Normal', approved: false },
            { taskID: 3, taskName: 'Plan budget', startDate: new Date('02/03/2017'), postalCode:'65329',
                endDate: new Date('02/07/2017'), duration: 64.98, progress: 100, priority: 'Low', approved: true },
            { taskID: 4, taskName: 'Allocate resources', startDate: new Date('02/03/2017'),postalCode:'87654',
                endDate: new Date('02/07/2017'), duration: 34.90, progress: 100, priority: 'Critical', approved: false },
            { taskID: 5, taskName: 'Planning complete', startDate: new Date('02/07/2017'),postalCode:'87321',
                endDate: new Date('02/07/2017'), duration: 22.77, progress: 0, priority: 'Low', approved: true }
        ]
    },
    {
        taskID: 6,
        taskName: 'Design',
        startDate: new Date('02/10/2017'),
        endDate: new Date('02/14/2017'),
        duration: 37.98,
        progress: 86,
        priority: 'High',
        approved: false,
        postalCode:'65709',
        subtasks: [
            { taskID: 7, taskName: 'Software Specification', startDate: new Date('02/10/2017'),postalCode:'90876',
                endDate: new Date('02/12/2017'), duration: 45.95, progress: 60, priority: 'Normal', approved: false },
            { taskID: 8, taskName: 'Develop prototype', startDate: new Date('02/10/2017'),postalCode:'89075',
                endDate: new Date('02/12/2017'), duration: 24.86, progress: 100, priority: 'Critical', approved: false },
            { taskID: 9, taskName: 'Get approval from customer', startDate: new Date('02/13/2017'),postalCode:'67808',
                endDate: new Date('02/14/2017'), duration: 28.94, progress: 100, priority: 'Low', approved: true },
            { taskID: 10, taskName: 'Design Documentation', startDate: new Date('02/13/2017'),postalCode:'76543',
                endDate: new Date('02/14/2017'), duration: 26.92, progress: 100, priority: 'High', approved: true },
            { taskID: 11, taskName: 'Design complete', startDate: new Date('02/14/2017'), postalCode:'563489',
                endDate: new Date('02/14/2017'), duration: 37.76, progress: 0, priority: 'Normal', approved: true }
        ]
    },
    {
        taskID: 12,
        taskName: 'Implementation Phase',
        startDate: new Date('02/17/2017'),
        endDate: new Date('02/27/2017'),
        priority: 'Normal',
        approved: false,
        duration: 11.76,
        progress: 66,
        postalCode:'987654',
        subtasks: [
            {
                taskID: 13,
                taskName: 'Phase 1',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'High',
                approved: false,
                progress: 50,
                duration: 15.86,
                postalCode:'87654',
                subtasks: [{
                    taskID: 14,
                    taskName: 'Implementation Module 1',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'Normal',
                    duration: 16.89,
                    progress: 10,
                    approved: false,
                    postalCode:'98765',
                    subtasks: [
                        { taskID: 15, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'98345',
                            endDate: new Date('02/19/2017'), duration: 67.89, progress: '50', priority: 'High', approved: false },
                        { taskID: 16, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'54678',
                            endDate: new Date('02/19/2017'), duration: 45.96, progress: '50', priority: 'Low', approved: true },
                        { taskID: 17, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87654',
                            endDate: new Date('02/21/2017'), duration: 64.97, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 18, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'65432',
                            endDate: new Date('02/25/2017'), duration: 33.67, progress: '0', priority: 'Critical', approved: false },
                        { taskID: 19, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'97625',
                            endDate: new Date('02/27/2017'), duration: 25.34, progress: '0', priority: 'High', approved: false },
                        { taskID: 20, taskName: 'Phase 1 complete', startDate: new Date('02/27/2017'),postalCode:'65109',
                            endDate: new Date('02/27/2017'), duration: 89.76, progress: '50', priority: 'Low', approved: true }

                    ]
                }]
            },
            {
                taskID: 21,
                taskName: 'Phase 2',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/28/2017'),
                priority: 'High',
                approved: false,
                duration: 12.78,
                postalCode:'76543',
                progress: 60,
                subtasks: [{
                    taskID: 22,
                    taskName: 'Implementation Module 2',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/28/2017'),
                    priority: 'Critical',
                    approved: false,
                    duration: 67.98,
                    postalCode:'76541',
                    progress: 90,
                    subtasks: [
                        { taskID: 23, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'61239',
                            endDate: new Date('02/20/2017'), duration: 64.87, progress: '50', priority: 'Normal', approved: true },
                        { taskID: 24, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'74190',
                            endDate: new Date('02/20/2017'), duration: 75.29, progress: '50', priority: 'Critical', approved: true },
                        { taskID: 25, taskName: 'Testing', startDate: new Date('02/21/2017'),postalCode:'27906',
                            endDate: new Date('02/24/2017'), duration: 65.23, progress: '0', priority: 'High', approved: false },
                        { taskID: 26, taskName: 'Bug fix', startDate: new Date('02/25/2017'),postalCode:'25679',
                            endDate: new Date('02/26/2017'), duration: 78.92, progress: '0', priority: 'Low', approved: false },
                        { taskID: 27, taskName: 'Customer review meeting', startDate: new Date('02/27/2017'),postalCode:'43218',
                            endDate: new Date('02/28/2017'), duration: 56.98, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 28, taskName: 'Phase 2 complete', startDate: new Date('02/28/2017'),postalCode:'59075',
                            endDate: new Date('02/28/2017'), duration: 34.70, progress: '50', priority: 'Normal', approved: false }

                    ]
                }]
            },

            {
                taskID: 29,
                taskName: 'Phase 3',
                startDate: new Date('02/17/2017'),
                endDate: new Date('02/27/2017'),
                priority: 'Normal',
                approved: false,
                duration: 11.86,
                progress: 30,
                postalCode:'90876',
                subtasks: [{
                    taskID: 30,
                    taskName: 'Implementation Module 3',
                    startDate: new Date('02/17/2017'),
                    endDate: new Date('02/27/2017'),
                    priority: 'High',
                    approved: false,
                    duration: 65.72,
                    progress: 60,
                    postalCode:'58908',
                    subtasks: [
                        { taskID: 31, taskName: 'Development Task 1', startDate: new Date('02/17/2017'),postalCode:'65218',
                            endDate: new Date('02/19/2017'), duration:45.03, progress: '50', priority: 'Low', approved: true },
                        { taskID: 32, taskName: 'Development Task 2', startDate: new Date('02/17/2017'),postalCode:'65190',
                            endDate: new Date('02/19/2017'), duration: 65.29, progress: '50', priority: 'Normal', approved: false },
                        { taskID: 33, taskName: 'Testing', startDate: new Date('02/20/2017'),postalCode:'87642',
                            endDate: new Date('02/21/2017'), duration: 89.56, progress: '0', priority: 'Critical', approved: true },
                        { taskID: 34, taskName: 'Bug fix', startDate: new Date('02/24/2017'),postalCode:'93160',
                            endDate: new Date('02/25/2017'), duration: 73.68, progress: '0', priority: 'High', approved: false },
                        { taskID: 35, taskName: 'Customer review meeting', startDate: new Date('02/26/2017'),postalCode:'76410',
                            endDate: new Date('02/27/2017'), duration: 92.58, progress: '0', priority: 'Normal', approved: true },
                        { taskID: 36, taskName: 'Phase 3 complete', startDate: new Date('02/27/2017'),postalCode:'83219',
                            endDate: new Date('02/27/2017'), duration: 75.89, progress: '50', priority: 'Critical', approved: false },
                    ]
                }]
            }
        ]
    }
];

export let multiselectdata=[
    { value: 'Planning', text: 'Planning' },
    { value: 'Plan timeline', text: 'Plan timeline' },
    { value: 'Plan budget', text: 'Plan budget' },
    { value: 'Allocate resources', text: 'Allocate resources' },
    { value: 'Planning complete', text: 'Planning complete' },
    { value: 'Design', text: 'Design' },
    { value: 'Software Specification', text: 'Software Specification' },
    { value: 'Develop prototype', text: 'Develop prototype' },
    { value: 'Get approval from customer', text: 'Get approval from customer' },
    { value: 'Design Documentation', text: 'Design Documentation' },
    { value: 'Design complete', text: 'Design complete' },
    { value: 'Implementation Phase', text: 'Implementation Phase' },
    { value: 'Phase 1', text: 'Phase 1' },
    { value: 'Implementation Module 1', text: 'Implementation Module 1' },
    { value: 'Development Task 1', text: 'Development Task 1' },
    { value: 'Development Task 2', text: 'Development Task 2' },
    { value: 'Testing', text: 'Testing' },
    { value: 'Bug fix', text: 'Bug fix' },
    { value: 'Customer review meeting', text: 'Customer review meeting' },
    { value: 'Phase 1 complete', text: 'Phase 1 complete' },
    { value: 'Phase 2', text: 'Phase 2' },
    { value: 'Implementation Module 2', text: 'Implementation Module 2' },
    { value: 'Phase 2 complete', text: 'Phase 2 complete' },
    { value: 'Phase 3', text: 'Phase 3' },
    { value: 'Implementation Module 3', text: 'Implementation Module 3' },
    { value: 'Phase 3 complete', text: 'Phase 3 complete' },
   
  ];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Render cascading DropDownList component in edit form

The Tree Grid allows you to render the cascading DropDownList within the edit form by using the cell edit template feature.This feature is especially useful when you need to establish a hierarchy of options, such as choosing a country and then selecting a state based on the chosen country.

To achieve this, you need to utilize the columns->edit property along with a defined object that specifies the necessary functions for creating, reading, and writing the auto complete component.

In the below demo, cascading DropDownList rendered for Priority and Duration column.

import { Component, OnInit, ViewChild } from '@angular/core';
import { projectData } from './datasource';
import { TreeGridComponent, EditSettingsModel, ToolbarItems,  EditService, ToolbarService  } from '@syncfusion/ej2-angular-treegrid';
import { DropDownList } from '@syncfusion/ej2-dropdowns';
import { DataManager, Query } from '@syncfusion/ej2-data';
import { IEditCell } from '@syncfusion/ej2-angular-grids';

@Component({
    imports: [
    TreeGridAllModule,
    ],
    standalone: true,
    selector: 'app-container',
    providers: [EditService, ToolbarService],
    template: `<ejs-treegrid #treegridObj [dataSource]='data' idMapping='TaskID' parentIdMapping='parentID' [treeColumnIndex]='1' [editSettings]='editSettings' [toolbar]='toolbar' [height]='273'>
        <e-columns>
            <e-column field='TaskID' headerText='Task ID' isPrimaryKey='true' width='70' textAlign='Right'></e-column>
            <e-column field='TaskName' headerText='Task Name' width='150' ></e-column>
            <e-column field='Priority' headerText='Priority' width='130' editType= 'dropdownedit' [edit]='priorityParams'></e-column>
            <e-column field='Duration' headerText='Duration' width='130' textAlign='Right' editType='dropdownedit' [edit]='durationParams'></e-column>
            <e-column field='Progress' headerText='Progress' width='90' textAlign='Right'></e-column>
        </e-columns>
    </ejs-treegrid>`,
})
export class AppComponent implements OnInit {

    public data: Object[] = [];
    public editSettings?: EditSettingsModel;
    public toolbar?: ToolbarItems[];
    public priorityParams ?: IEditCell;
    public durationParams ?: IEditCell;
    public priorityElem ?: HTMLElement;
    public priorityObj ?: DropDownList;

    public durationElem ?: HTMLElement;
    public durationObj ?: DropDownList;

    @ViewChild('treegridObj')
    public treegridObj?: TreeGridComponent;

    public priorityData: { [key: string]: Object }[] = [
      { priorityName: 'Normal', priorityId: '1' },
      { priorityName: 'High', priorityId: '2' }
    ];
    public durationData : { [key: string]: Object }[] = [
            { durationValue: 2, priorityId: '1', durationId: 2 },
            { durationValue: 3, priorityId: '1', durationId: 3 },
            { durationValue: 4, priorityId: '1', durationId: 4 },
            { durationValue: 11, priorityId: '2', durationId: 11 },
            { durationValue: 15, priorityId: '2', durationId: 15 },
            { durationValue: 20, priorityId: '2', durationId: 20 }
    ];

    ngOnInit(): void {
        this.data = projectData;
        this.editSettings = { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Row' };
        this.toolbar = ['Add', 'Edit', 'Delete', 'Update', 'Cancel'];
        this.priorityParams = {
            create:()=>{
            this.priorityElem = document.createElement('input');
                return this.priorityElem;
            },
            read:()=>{
                return this.priorityObj?.text;
            },
            destroy:()=>{
                this.priorityObj?.destroy();
            },
            write:()=>{
                this.priorityObj = new DropDownList({
                dataSource: new DataManager(this.priorityData),
                fields: { value: 'priorityId', text: 'priorityName' },
                change: () => {
                (this.durationObj as DropDownList).enabled = true;
                let dd_value:any=(this.priorityObj as DropDownList).value;
                let tempQuery: Query = new Query().where('priorityId', 'equal', dd_value);
                (this.durationObj as DropDownList).query = tempQuery;
                (this.durationObj as any).text = undefined;
                this.durationObj?.dataBind();
            },
            placeholder: 'Select a priority',
            floatLabelType: 'Never'
            });
            this.priorityObj.appendTo(this.priorityElem);
        }};
        this.durationParams = {
            create:()=>{
                this.durationElem = document.createElement('input');
                return this.durationElem;
            },
            read:()=>{
                return this.durationObj?.text;
            },
            destroy:()=>{
                this.durationObj?.destroy();
            },
            write:()=>{
                this.durationObj = new DropDownList({
                dataSource: new DataManager(this.durationData),
                fields: { value: 'durationId', text: 'durationValue' },
                enabled: false,
                placeholder: 'Select a duration',
                floatLabelType: 'Never'
            });
            this.durationObj.appendTo(this.durationElem);
        }}
    }


}
export let projectData: Object[] = [
    { TaskID: 1, TaskName: 'Parent Task 1', StartDate: new Date('02/23/2023'), Duration: 3, Priority : 'Normal',
    EndDate: new Date('02/27/2023'), Progress: '40',Approved:true , Task_FeedbackDetails:'positive',parentID: null},
    { TaskID: 2, TaskName: 'Child Task 1', StartDate: new Date('02/23/2023'), Duration: 4, Priority : 'Low',
    EndDate: new Date('02/27/2023'), Progress: '40', parentID: 1,Task_FeedbackDetails:'positive', Approved:false},
    { TaskID: 3, TaskName: 'Child Task 2', StartDate: new Date('02/23/2023'), Duration: 2, Priority : 'Normal',
    EndDate: new Date('02/27/2023'), Progress: '40', parentID: 1, Task_FeedbackDetails:'negative',Approved:true },
    { TaskID: 4, TaskName: 'Child Task 3', StartDate: new Date('02/23/2023'), Duration: 2, Priority : 'Low',
    EndDate: new Date('02/27/2023'), Progress: '40',Task_FeedbackDetails:'negative', parentID: 1 },
   
    { TaskID: 5, TaskName: 'Parent Task 2', StartDate: new Date('03/14/2023'), Duration: 6, Priority : 'Normal',
    EndDate: new Date('03/18/2023'), Progress: '40',Task_FeedbackDetails:'negative',Approved:false , parentID: null},
    { TaskID: 6, TaskName: 'Child Task 1', StartDate: new Date('03/02/2023'), Duration: 11, Priority : 'High',
    EndDate: new Date('03/06/2023'), Progress: '40', Task_FeedbackDetails:'negative',parentID: 5,Approved:false },
    { TaskID: 7, TaskName: 'Child Task 2', StartDate: new Date('03/02/2023'), Duration: 7, Priority : 'Critical',
    EndDate: new Date('03/06/2023'), Progress: '40', Task_FeedbackDetails:'positive',parentID: 5 },
    { TaskID: 8, TaskName: 'Child Task 3', StartDate: new Date('03/02/2023'), Duration: 10, Priority : 'Breaker',
    EndDate: new Date('03/06/2023'), Progress: '40', Task_FeedbackDetails:'negative',parentID: 5,Approved:true },
    { TaskID: 9, TaskName: 'Child Task 4', StartDate: new Date('03/02/2023'), Duration: 15, Priority : 'High',
    EndDate: new Date('03/06/2023'), Progress: '40', Task_FeedbackDetails:'positive',parentID: 5 ,Approved:false},
  
    { TaskID: 10, TaskName: 'Parent Task 3', StartDate: new Date('03/09/2023'), Duration: 17, Priority : 'Breaker',
    EndDate: new Date('03/13/2023'), Progress: '40',Task_FeedbackDetails:'positive',Approved:false, parentID: null },
    { TaskID: 11, TaskName: 'Child Task 1', StartDate: new Date('03/9/2023'), Duration: 0, Priority : 'Low',
    EndDate: new Date('03/13/2023'), Progress: '40',Task_FeedbackDetails:'negative', parentID: 10 ,Approved:true},
    { TaskID: 12, TaskName: 'Child Task 2', StartDate: new Date('03/9/2023'), Duration: 10, Priority : 'Breaker',
    EndDate: new Date('03/13/2023'), Progress: '40',Task_FeedbackDetails:'negative', parentID: 10 ,Approved:false},
    { TaskID: 13, TaskName: 'Child Task 3', StartDate: new Date('03/9/2023'), Duration: 11, Priority : 'Normal',
    EndDate: new Date('03/13/2023'), Progress: '40',Task_FeedbackDetails:'positive', parentID: 10,Approved:false },
    { TaskID: 14, TaskName: 'Child Task 4', StartDate: new Date('03/9/2023'), Duration: 1, Priority : 'Normal',
    EndDate: new Date('03/13/2023'), Progress: '40',Task_FeedbackDetails:'positive', parentID: 10,Approved:false },
    { TaskID: 15, TaskName: 'Child Task 5', StartDate: new Date('03/9/2023'), Duration: 14, Priority : 'Critical',
    EndDate: new Date('03/13/2023'), Progress: '40', Task_FeedbackDetails:'negative',parentID: 10 ,Approved:true}
  ];
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));