Filtering
To enable the filtering functionality, set the filterable property to true.
Basic Configuration
When the filtering functionality is enabled, the component renders a filter input in the drop-down list. On every character input, the component triggers a onFilterChange event. The event argument contains the typed string value that you can use to filter the source.
To filter the data after a delay, use a similar implementation. You can toggle the loading property and provide the user with a visual indication of the filtering process.
Minimum Filter Length
The following example demonstrates how to update the data and open the DropDownList only after typing a minimum number of characters.
Filtering with Remote Data and Virtualization
The following example demonstrates how to configure the DropDownList to use remote data along with data caching, virtual scrolling, and filtering.