Angular 2 how disable kendo-dropdownlist

With a constant value use:

<kendo-dropdownlist [data]="listItems" disabled="'true'"></kendo-dropdownlist>

With a component value:

@Component({
  selector: 'my-app',
  template: `
    <kendo-dropdownlist [data]="listItems" [disabled]="disabled"></kendo-dropdownlist>`
})
class AppComponent {
    public listItems: Array<string> = ["1", "2", "3"];
    public disabled: true;
}

Reference: http://www.telerik.com/kendo-angular-ui/components/dropdowns/api/DropDownListComponent/#toc-delay