The RadAutoSuggestBox control provides several actions executed via the keyboard.
The supported keys are Up, Down, Escape and Enter.
Up and Down: Those keys allow you to navigate through the drop down list of the control.
Enter: The key executes the query submitted action which fires the QuerySubmitted event.
Escape: When you navigate in the drop down list using the Up and Down keys, the last typed text is cached. If you press the Esc key, the cached text will get reverted.