DevExtreme Angular - Overview

The TreeView widget is a tree-like representation of textual data.

View Demo Watch Video

The following code adds a simple TreeView to your page:

HTML
TypeScript
  • <dx-tree-view
  • [dataSource]="hierarchicalData">
  • </dx-tree-view>
  • import { DxTreeViewModule } from 'devextreme-angular';
  • // ...
  • export class AppComponent {
  • hierarchicalData = [{
  • id: '1',
  • text: 'Fruits',
  • expanded: true,
  • items: [
  • { id: '1_1', text: 'Apples' },
  • { id: '1_2', text: 'Oranges' }
  • ]
  • }, {
  • id: '2',
  • text: 'Vegetables',
  • expanded: true,
  • items: [
  • { id: '2_1', text: 'Cucumbers' },
  • { id: '2_2', text: 'Tomatoes' }
  • ]
  • }];
  • }
  • @NgModule({
  • imports: [
  • // ...
  • DxTreeViewModule
  • ],
  • // ...
  • })

Note that the data source in the code above has a hierarchical structure, however, it also supports data sources with a plain structure. See the Use Hierarchical Data and Use Plain Data articles to learn how you can customize hierarchical and plain data sources.

See Also