DevExtreme Angular - Overview
The TreeView widget is a tree-like representation of textual data.
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
- Widget Basics: jQuery | Angular | AngularJS | Knockout
- TreeView - Access a Node
- TreeView - Search Nodes
- TreeView - Expand and Collapse Nodes
- TreeView - Select Nodes
- TreeView - Customize Node Appearance
- TreeView - Enhance Performance on Large Datasets
- TreeView - Keyboard Support
- TreeView API Reference
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