When the user enters a filter, the list is filtered. But if the user deletes the filter by clicking on the X in the filter box, the list remains filtered. It does not revert to the full, unfiltered list. To get back to the full list, the user must delete the filter by backspacing or pressing the delete key on the keyboard. This behavior is confusing some users, who have used the mouse to delete the filter in IE11. There's no longer a filter string there, but the list is still filtered. Can the dropdownlist listen for the click that clears the filter string from the textbox?