DevExtreme Angular - Overview

The Lookup is a widget that allows an end user to search for an item in a collection shown in a drop-down menu.

View Demo

The following code adds the Lookup widget to your page. The simplest configuration requires only a dataSource to be specified. In addition, you can define the placeholder to be displayed when the Lookup input field is empty.

HTML
TypeScript
  • <dx-lookup
  • [dataSource]="lookupDataSource"
  • placeholder="Select a product...">
  • </dx-lookup>
  • import { DxLookupModule } from "devextreme-angular";
  • // ...
  • export class AppComponent {
  • lookupDataSource = [ "HD Video Player", "SuperHD Video Player", "SuperPlasma 50" ];
  • }
  • @NgModule({
  • imports: [
  • // ...
  • DxLookupModule
  • ],
  • // ...
  • })

If your data is an array of objects, specify:

  • valueExpr
    The data field whose value will be written into the value option.
  • displayExpr
    The data field whose value will be displayed within the inner List widget and in the input field of the Lookup.
HTML
TypeScript
  • <dx-lookup
  • [dataSource]="lookupDataSource"
  • valueExpr="id"
  • displayExpr="country">
  • </dx-lookup>
  • import { DxLookupModule } from "devextreme-angular";
  • // ...
  • export class AppComponent {
  • lookupDataSource = [
  • { id: 1, country: "Afghanistan" },
  • { id: 2, country: "Albania" },
  • // ...
  • ];
  • }
  • @NgModule({
  • imports: [
  • // ...
  • DxLookupModule
  • ],
  • // ...
  • })
See Also