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Editing

The TreeGrid component has options to dynamically insert, delete and update records. Editing feature is enabled by using editSettings property and it requires a primary key column for CRUD operations. To define the primary key, set columns.isPrimaryKey to true in particular column.

To use CRUD, inject the Edit module in treegrid.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        { field: 'priority', headerText: 'Priority', width: 90 },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Toolbar with edit option

The treegrid toolbar has the built-in items to execute Editing actions. You can define this by using the toolbar property.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Edit', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Row' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        { field: 'priority', headerText: 'Priority', width: 90 },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Cell edit type and its params

The columns.editType is used to customize the edit type of the particular column. You can set the columns.editType based on data type of the column.

Also, you can customize model of the columns.editType component through the columns.edit.params.

The following table describes cell edit type component and their corresponding edit params of the column.

Component Example
NumericTextBox params: { decimals: 2, value: 5 }
TextBox -
DropDownList params: { value: ‘Germany’ }
Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Row' },
    treeColumnIndex: 1,
    columns: [
        {
            field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, textAlign: 'Right', width: 100
        },
        {
            field: 'taskName', headerText: 'Task Name', editType: 'stringedit', width: 170
        },
        {
            field: 'startDate', headerText: 'Start Date', textAlign: 'Right', width: 180,
            editType: 'datetimepickeredit', edit: { params: { format: 'M/d/y hh:mm a' } },
            format: { format: 'M/d/y hh:mm a', type: 'dateTime' }
        },
        {
            field: 'approved', headerText: 'Approved', width: 110, editType: 'booleanedit',
            type: 'boolean', displayAsCheckBox: true
        },
        {
            field: 'progress', headerText: 'Progress', textAlign: 'Right', width: 120,
            editType: 'numericedit', edit: { params: { format: 'n' } }
        },
        { field: 'priority', headerText: 'Priority', width: 110, editType: 'dropdownedit' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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

Cell Edit Template

The cell edit template is used to add a custom component for a particular column by invoking the following functions:

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

  • write - It is used to create the 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.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var elem;
var autoCompleteObj;
var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    treeColumnIndex: 1,
    height: 400,
    editSettings: {
        allowAdding: true,
        allowEditing: true,
        allowDeleting: true,
        mode: 'Cell',
        newRowPosition: 'Below'
    },
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    columns: [
        {
            field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, textAlign: 'Right', width: 90
        },
        { field: 'taskName', headerText: 'Task Name', editType: 'stringedit', edit: {
            create: function(){
                    elem = document.createElement('input');
                    return elem;
                },
            read: function() {
                    return autoCompleteObj.value;
                },
            destroy: function() {
                    autoCompleteObj.destroy();
                },
            write: function(args){
                    autoCompleteObj = new ej.dropdowns.AutoComplete({
                        dataSource: treeGridObj.grid.dataSource,
                        fields: { value: 'taskName' },
                        value: args.rowData[args.column.field]
                });
                autoCompleteObj.appendTo(elem);
            }
            },
            width: 180  },
        { field: 'startDate', headerText: 'Start Date', textAlign: 'Right', width: 130, editType: 'datepickeredit', type: 'date', format: 'yMd' },
        {
            field: 'duration', headerText: 'Duration', textAlign: 'Right', width: 80, editType: 'numericedit', edit: { params: {  format: 'n'}}
        }
    ]
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Edit Modes

TreeGrid supports the following types of edit modes, they are:

  • Cell
  • Row
  • Dialog

Cell

In Cell edit mode, when you double click on a cell, it is changed to edit state. You can change the cell value and save to the data source. To enable Cell edit, set the editSettings.mode as Cell.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, textAlign: 'Right', editType: 'datepickeredit', type: 'date', format: 'yMd'
        },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Cell edit mode is default mode of editing.

Row

In Row edit mode, when you start editing the currently selected record, the entire row is changed to edit state. You can change the cell values of the row and save edited data to the data source. To enable Row edit, set the editSettings.mode as Row.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Edit', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Row' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, textAlign: 'Right', editType: 'datepickeredit', type: 'date', format: 'yMd'
        },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Dialog

In Dialog edit mode, when you start editing the currently selected row, data will be shown on a dialog. You can change the cell values and save edited data to the data source. To enable Dialog edit, set the editSettings.mode as Dialog.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Edit', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Dialog' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, editType: 'datepickeredit', textAlign: 'Right', type: 'date',format: 'yMd'
        },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Dialog template

The dialog template editing provides an option to customize the default behavior of dialog editing. Using the dialog template, you can render your own editors by defining the editSettings.mode as Dialog and template as SCRIPT element ID or HTML string which holds the template.

In some cases, you need to add the new field editors in the dialog which are not present in the column model. In that situation, the dialog template will help you to customize the default edit dialog.

In the following sample, treegrid enabled with dialog template editing.

Source
Preview
index.js
index.css
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Edit', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Dialog',
    template: '#dialogtemplate' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, textAlign: 'Right', type: 'date',format: 'yMd'
        },
        { field: 'progress', headerText: 'Progress', width: 80, textAlign: 'Right' }
    ],
    height: 270,
    actionBegin: function(args){
        if (args.requestType === 'save') {
            // cast string to integer value.
            args.data['progress'] = parseFloat(args.form.querySelector("#progress").value);
        }
    },
    actionComplete: function(args){
        if ((args.requestType === 'beginEdit' || args.requestType === 'add')) {
            // Add Validation Rules
            args.form.ej2_instances[0].addRules('progress', {max: 100});
            // EJ2-control Rendering
            var priorityData = ej.data.DataUtil.distinct(treeGridObj.grid.dataSource, 'priority',true);
            new ej.dropdowns.DropDownList({value: args.rowData.priority, popupHeight: '200px', floatLabelType: 'Always',
                dataSource: priorityData, fields: {text: 'priority', value: 'priority'}, placeholder: 'Priority'}, args.form.elements.namedItem('priority'));

            new ej.calendars.DatePicker({value: args.rowData.startDate, floatLabelType: 'Always', placeholder: 'Start Date'}, args.form.elements.namedItem('startDate'))

            new ej.calendars.DatePicker({value: args.rowData.endDate, floatLabelType: 'Always', placeholder: 'End Date'}, args.form.elements.namedItem('endDate'))

            new ej.buttons.CheckBox({ label: 'Approved', checked: args.rowData.approved }, args.form.elements.namedItem('approved'));

            new ej.inputs.NumericTextBox({value: args.rowData.progress, format: 'n', placeholder: 'Progress', floatLabelType: 'Always' }, args.form.elements.namedItem('progress'));
             // Set initail Focus
            if (args.requestType === 'beginEdit') {
                (args.form.elements.namedItem('taskName')).focus();
            }
        }
    }
});

treeGridObj.appendTo('#TreeGrid');
#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  font-family: 'Helvetica Neue','calibiri';
  font-size: 14px;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}

.form-group .col-md-6 {
  width: 250px;
}
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>
    <script id="dialogtemplate" type="text/x-template">
        <div>
            <div class="form-row" >
                <div class="form-group col-md-6">
                    <div class="e-float-input e-control-wrapper">
                        <input id="taskID" name="taskID" type="text" value=${if(isAdd)} '' ${else} ${taskID} ${/if}  ${if(isAdd)}'' ${else} disabled ${/if}/>
                        <span class="e-float-line"></span>
                        <label class="e-float-text e-label-top" for="OrderID">Task ID</label>
                    </div>
                </div>
                <div class="form-group col-md-6">
                    <div class="e-float-input e-control-wrapper">
                        <input id="taskName" name="taskName" type="text" value=${if(isAdd)} '' ${else} ${taskName} ${/if} />
                        <span class="e-float-line"></span>
                        <label class="e-float-text e-label-top" for="taskName">Task Name</label>
                    </div>
                </div>
            </div>
            <div class="form-row">
                <div class="form-group col-md-6">
                    <div>
                        <input id="priority" name="priority" type="text" value=${if(isAdd)} '' ${else} ${priority} ${/if} />
                    </div>
                </div>
                <div class="form-group col-md-6">
                    <input id="progress" value=${if(isAdd)} '' ${else} ${progress} ${/if} />
                </div>
            </div>
            <div class="form-row">
                <div class="form-group col-md-6">
                    <div class="e-float-input e-control-wrapper">
                        <input type="text" name="startDate" id="startDate" value=${if(isAdd)} '' ${else} ${startDate} ${/if} />
                        <span class="e-float-line"></span>
                    </div>
                </div>
                <div class="form-group col-md-6">
                    <div class="e-float-input e-control-wrapper">
                        <input type="text" name="endDate" id="endDate" value=${if(isAdd)} '' ${else} ${endDate} ${/if} />
                        <span class="e-float-line"></span>
                    </div>
                </div>
            </div>
            <div class="form-row">
                <div class="form-group col-md-6">
                    <input type="checkbox" name="approved" id="approved" ${if(isAdd)} '' ${else} checked ${/if} />
                </div>
            </div>
        </div>      
    </script>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

The template form editors should have name attribute.

Template context

The Essential JS2 packages has a built-in template engine. Using the template engine, you can access the row information inside the HTML element and bind the attributes, values, or elements based on this row information.

The following properties will be available at the time of template execution.

Property Name Usage
isAdd A Boolean property; it defines whether the current row should be a new record or not.

In the following code example, the OrderID textbox has been disabled by using the isAdd property.

// The disabled attributes will be added based on the isAdd property.
<input id="taskID" name="taskID" type="text" value=${if(isAdd)} '' ${else} ${taskID} ${/if}  ${if(isAdd)}'' ${else} disabled ${/if}/>

The following code example illustrates rendering the taskID textbox, when a new record is added.

${if(isAdd)}
<div class="form-group col-md-6">
    <div class="e-float-input e-control-wrapper">
        <input id="taskID" name="taskID" type="text" value=${if(isAdd)} '' ${else} ${taskID} ${/if}  ${if(isAdd)}'' ${else} disabled ${/if}/>
        <span class="e-float-line"></span>
        <label class="e-float-text e-label-top" for="OrderID">Task ID</label>
    </div>
</div>
${/if}

The dialog template syntax supports the ES6 expression string literals, and you can refer to the Template Engine for more template syntax.

Render editors as components

You can convert the form editors to EJ2 controls in the actionComplete event based on the requestType as beginEdit or add.

The following code example illustrates rendering the drop-down list control in the actionComplete event.

    actionComplete: (args: DialogEditEventArgs) => {
        if ((args.requestType === 'beginEdit' || args.requestType === 'add')) {
            let priorityData: {}[] = DataUtil.distinct(treeGridObj.grid.dataSource, 'priority',true);
            new DropDownList({value: args.rowData.priority, popupHeight: '200px', floatLabelType: 'Always',
                dataSource: priorityData, fields: {text: 'priority', value: 'priority'}, placeholder: 'Priority'}, args.form.elements.namedItem('priority') as HTMLInputElement);
        }
    }

Get value from editor

You can read, format, and update the current editor value in the actionBegin event at the time of setting requestType to save.

In the following code example, the progress value has been formatted and updated.

    actionBegin: (args: SaveEventArgs) => {
        if (args.requestType === 'save') {
            // cast string to integer value.
            args.data['progress'] = parseFloat(args.form.querySelector("#progress").value);
        }
    }

Set focus to editor

By default, the first input element in the dialog will be focused while opening the dialog. If the first input element is in disabled or hidden state, focus the valid input element in the actionComplete event based on requestType as beginEdit.

    actionComplete: (args: DialogEditEventArgs) => {
        // Set initail Focus
        if (args.requestType === 'beginEdit') {
            (args.form.elements.namedItem('taskName')as HTMLInputElement).focus();
        }
    }

Adding validation rules for custom editors

If you have used additional fields that are not present in the column model, then add the validation rules to the actionComplete event.

    actionComplete: (args: DialogEditEventArgs) => {
        if ((args.requestType === 'beginEdit' || args.requestType === 'add')) {
            // Add Validation Rules
            args.form.ej2_instances[0].addRules('progress', {max: 100});
        }
    }

Adding row position

The TreeGrid control provides the support to add the new row in the top, bottom, above selected row, below selected row and child position of tree grid content using editSettings.newRowPosition property. By default, a new row will be added at the top of the treegrid.

The following examples shows how to set new row position as Child in tree grid.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, newRowPosition: 'Child', mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, textAlign: 'Right', editType: 'datepickeredit', type: 'date', format: 'yMd'
        },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Command column

The command column provides an option to add CRUD action buttons in a column. This can be defined by the column.commands property.

The available built-in command buttons are:

Command Button Actions
Edit Edit the current row.
Delete Delete the current row.
Save Update the edited row.
Cancel Cancel the edited state.
Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.CommandColumn);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Row' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
        {
            headerText: 'Manage Records', width: 130,
            commands: [{ type: 'Edit', buttonOption: { iconCss: ' e-icons e-edit', cssClass: 'e-flat' } },
                { type: 'Delete', buttonOption: { iconCss: 'e-icons e-delete', cssClass: 'e-flat' } },
                { type: 'Save', buttonOption: { iconCss: 'e-icons e-update', cssClass: 'e-flat' } },
                { type: 'Cancel', buttonOption: { iconCss: 'e-icons e-cancel-icon', cssClass: 'e-flat' } }]
        }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Custom command

The custom command buttons can be added in a column by using the column.commands property and the action for the custom buttons can be defined in the buttonOption.click event.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.CommandColumn);

var onClick = function(args){
    var rowIndex = ej.base.closest(args.target, '.e-row').rowIndex;
    var data = treeGridObj.getCurrentViewRecords();
    alert(JSON.stringify(data[rowIndex]));
}

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Row' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
        { headerText: 'Commands', width: 120, commands: [{ buttonOption: { content: 'Details', cssClass: 'e-flat', click: onClick } }]},
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Confirmation messages

Delete confirmation

The delete confirm dialog can be shown when deleting a record by defining the showDeleteConfirmDialog as true

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, showDeleteConfirmDialog: true, mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, textAlign: 'Right', editType: 'datepickeredit', type: 'date', format: 'yMd'
        },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

The showDeleteConfirmDialog supports all type of edit modes.

Column validation

Column validation allows you to validate the edited or added row data and it display errors for invalid fields before saving data. TreeGrid uses Form Validator component for column validation. You can set validation rules by defining the columns.validationRules.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, showDeleteConfirmDialog: true, mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
        {
            field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, textAlign: 'Right',
            validationRules: { required: true, number: true }, width: 100
        },
        {
            field: 'taskName', headerText: 'Task Name', editType: 'stringedit',
            validationRules: { required: true }, width: 170
        },
        {
            field: 'startDate', headerText: 'Start Date', textAlign: 'Right', width: 180,
            editType: 'datetimepickeredit', edit: { params: { format: 'M/d/y hh:mm a' } },
            format: { format: 'M/d/y hh:mm a', type: 'dateTime' }, validationRules: { date: true }
        },
        {
            field: 'approved', headerText: 'Approved', width: 110, editType: 'booleanedit',
            type: 'boolean', displayAsCheckBox: true
        },
        {
            field: 'progress', headerText: 'Progress', textAlign: 'Right', width: 120,
            editType: 'numericedit', validationRules: { number: true, min: 0 }, edit: { params: { format: 'n' } }
        },
        { field: 'priority', headerText: 'Priority', width: 110, editType: 'dropdownedit', validationRules: { required: true } }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Custom validation

You can define your own custom validation rules for the specific columns by using Form Validator custom rules.

In the below demo, custom validation applied for Priority column.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var customFn = function(args) {
    return args['value'].length <= 8;
};

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, showDeleteConfirmDialog: true, mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, textAlign: 'Right', editType: 'datepickeredit', type: 'date', format: 'yMd'
        },
        { field: 'priority', headerText: 'Priority', width: 80, validationRules: { required: true, minLength: [customFn, 'Value should be within 8 letters'] } }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Default column values on add new

The treegrid provides an option to set the default value for the columns when adding a new record in it. To set a default value for the particular column by defining the columns.defaultValue.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, showDeleteConfirmDialog: true, mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, textAlign: 'Right', editType: 'datepickeredit', type: 'date', format: 'yMd'
        },
        { field: 'priority', headerText: 'Priority', width: 80, defaultValue: 'Normal' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Disable editing for particular column

You can disable editing for particular columns by using the columns.allowEditing.

In the following demo, editing is disabled for the Start Date column.

Source
Preview
index.js
index.html
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Add', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        {
            field: 'startDate', headerText: 'Start Date', width: 90, allowEditing: false, textAlign: 'Right', type: 'date', format: 'yMd'
        },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
    height: 270
});

treeGridObj.appendTo('#TreeGrid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></div>        
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Troubleshoot: Editing works only for first row

The Editing functionalities can be performed based upon the primary key value of the selected row. If primaryKey is not defined in the treegrid, then edit or delete action take places the first row.