DevExtreme Angular - Loading Indicator
When the Chart visualizes local data, loading is instant. But when the Chart is bound to a remote data source, loading may take a considerable amount of time. To keep the viewer's attention, the Chart can display a loading indicator.
To activate the loading indicator, assign true to the loadingIndicator.show option. Once data is loaded, the loading indicator will be hidden automatically.
- <dx-chart ... >
- <dxo-loading-indicator [show]="true"></dxo-loading-indicator>
- </dx-chart>
- import { DxChartModule } from 'devextreme-angular';
- // ...
- export class AppComponent {
- // ...
- }
- @NgModule({
- imports: [
- // ...
- DxChartModule
- ],
- // ...
- })
If you need to show or hide the loading indicator at runtime, call the showLoadingIndicator() or hideLoadingIndicator() method.
- import { ..., ViewChild } from '@angular/core';
- import { DxChartModule, DxChartComponent } from 'devextreme-angular';
- // ...
- export class AppComponent {
- @ViewChild(DxChartComponent) chart: DxChartComponent;
- showLoadingIndicator () {
- this.chart.instance.showLoadingIndicator();
- };
- hideLoadingIndicator () {
- this.chart.instance.hideLoadingIndicator();
- };
- }
- @NgModule({
- imports: [
- // ...
- DxChartModule
- ],
- // ...
- })
See Also
If you have technical questions, please create a support ticket in the DevExpress Support Center.