Excel export in Angular Treegrid component

27 Apr 202412 minutes to read

The excel export allows exporting TreeGrid data to Excel document. You need to use the excelExport method for exporting. To enable Excel export in the treegrid, set the allowExcelExport as true.

To use excel export, You need to inject the ExcelExport module in treegrid.

You can check this video to learn about how to perform Exporting and its customization in Angular TreeGrid.

app.component.ts

import { NgModule,ViewChild } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridModule } from '@syncfusion/ej2-angular-treegrid'
import { PageService, ExcelExportService, ToolbarService } from '@syncfusion/ej2-angular-treegrid'
import {ButtonModule} from '@syncfusion/ej2-angular-buttons'
import { DropDownListAllModule } from '@syncfusion/ej2-angular-dropdowns'



import { Component, OnInit } from '@angular/core';
import { sampleData } from './datasource';
import { ToolbarItems } from '@syncfusion/ej2-treegrid';
import { ExcelExportProperties } from '@syncfusion/ej2-grids';
import { TreeGridComponent } from '@syncfusion/ej2-angular-treegrid';

@Component({
imports: [
        
        TreeGridModule,
        ButtonModule,
        DropDownListAllModule,
    ],

providers: [PageService,
                ExcelExportService,
                ToolbarService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' #treegrid height='220' (toolbarClick)='toolbarClick($event)' [allowPaging]='true' [allowExcelExport]='true' [pageSettings]='pager' [treeColumnIndex]='1'  childMapping='subtasks' [toolbar]='toolbarOptions'>
        <e-columns>
                    <e-column field='taskID' headerText='Task ID' 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='yMd' width=120></e-column>
                    <e-column field='duration' headerText='Duration' textAlign='Right' width=110></e-column>
        </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: Object[];
    public pager?: Object;
    @ViewChild('treegrid')
    public treeGridObj?: TreeGridComponent;
    public toolbarOptions?: ToolbarItems[];

    ngOnInit(): void {
        this.data = sampleData;
        this.pager = { pageSize: 7 };
        this.toolbarOptions = ['ExcelExport'];
    }
    toolbarClick(args: Object | any) : void {
        if (args['item'].text === 'Excel Export') {
            this.treeGridObj?.excelExport();
        }
    }
}

main.ts

import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Persist collapsed state

You can persist the collapsed state in the exported document by defining isCollapsedStatePersist property as true in TreeGridExcelExportProperties parameter of excelExport method.

app.component.ts

import { NgModule,ViewChild } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridModule } from '@syncfusion/ej2-angular-treegrid'
import { PageService, ExcelExportService, ToolbarService } from '@syncfusion/ej2-angular-treegrid'
import {ButtonModule} from '@syncfusion/ej2-angular-buttons'
import { DropDownListAllModule } from '@syncfusion/ej2-angular-dropdowns'



import { Component, OnInit } from '@angular/core';
import { sampleData } from './datasource';
import { ToolbarItems, TreeGridExcelExportProperties } from '@syncfusion/ej2-treegrid';
import { TreeGridComponent } from '@syncfusion/ej2-angular-treegrid';

@Component({
imports: [
        
        TreeGridModule,
        ButtonModule,
        DropDownListAllModule,
    ],

providers: [PageService,
                ExcelExportService,
                ToolbarService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' #treegrid height='220' (toolbarClick)='toolbarClick($event)' [allowPaging]='true' [allowExcelExport]='true' [pageSettings]='pager' [treeColumnIndex]='1'  childMapping='subtasks' [toolbar]='toolbarOptions'>
        <e-columns>
                    <e-column field='taskID' headerText='Task ID' 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='yMd' width=120></e-column>
                    <e-column field='duration' headerText='Duration' textAlign='Right' width=110></e-column>
        </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: Object[];
    public pager?: Object;
    @ViewChild('treegrid')
    public treeGridObj?: TreeGridComponent;
    public toolbarOptions?: ToolbarItems[];

    ngOnInit(): void {
        this.data = sampleData;
        this.pager = { pageSize: 7 };
        this.toolbarOptions = ['ExcelExport'];
    }
    toolbarClick(args: Object | any) : void {
        if (args['item'].text === 'Excel Export') {
            let excelExportProperties: TreeGridExcelExportProperties = {
                isCollapsedStatePersist: true
            };
            this.treeGridObj?.excelExport(excelExportProperties);
        }
    }
}

main.ts

import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

The CSV export allows exporting tree grid data to text document. Use the csvExport method for exporting. To enable CSV export in the treegrid, set the allowCsvExport as true.

Custom data source

The excel export provides an option to define datasource dynamically before exporting. To export data dynamically, define the dataSource in exportProperties.

app.component.ts

import { NgModule,ViewChild } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { TreeGridModule } from '@syncfusion/ej2-angular-treegrid'
import { PageService, ExcelExportService, ToolbarService } from '@syncfusion/ej2-angular-treegrid'
import {ButtonModule} from '@syncfusion/ej2-angular-buttons'
import { DropDownListAllModule } from '@syncfusion/ej2-angular-dropdowns'



import { Component, OnInit } from '@angular/core';
import { sampleData } from './datasource';
import { ToolbarItems } from '@syncfusion/ej2-treegrid';
import { ExcelExportProperties } from '@syncfusion/ej2-grids';
import { TreeGridComponent } from '@syncfusion/ej2-angular-treegrid';

@Component({
imports: [
        
        TreeGridModule,
        ButtonModule,
        DropDownListAllModule,
    ],

providers: [PageService,
                ExcelExportService,
                ToolbarService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-treegrid [dataSource]='data' #treegrid height='220' (toolbarClick)='toolbarClick($event)' [allowPaging]='true' [allowExcelExport]='true' [pageSettings]='pager' [treeColumnIndex]='1'  childMapping='subtasks' [toolbar]='toolbarOptions'>
        <e-columns>
                    <e-column field='taskID' headerText='Task ID' 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='yMd' width=120></e-column>
                    <e-column field='duration' headerText='Duration' textAlign='Right' width=110></e-column>
        </e-columns>
                </ejs-treegrid>`
})
export class AppComponent implements OnInit {

    public data?: Object[];
    public pager?: Object;
    @ViewChild('treegrid')
    public treeGridObj?: TreeGridComponent;
    public toolbarOptions?: ToolbarItems[];

    ngOnInit(): void {
        this.data = sampleData;
        this.pager = { pageSize: 7 };
        this.toolbarOptions = ['ExcelExport'];
    }
    toolbarClick(args: Object | any) : void {
        if (args['item'].text === 'Excel Export') {
            let excelExportProperties: ExcelExportProperties = {
                dataSource: sampleData
            };
            this.treeGridObj?.excelExport(excelExportProperties);
        }
    }
}

main.ts

import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

You can refer to our Angular Tree Grid feature tour page for its groundbreaking feature representations. You can also explore our Angular Tree Grid example to knows how to present and manipulate data.