Is it possible to send the keystoke equivalent to the combo so it will drop down when it recieves the focus?

Sure, just put







in the Enter handler for the dropdownlistbox



Of course you can just start typing to find the value you want.



Or, you can create a keypress handler to do the Sendkeys.Send on hitting space or something.



( this also works for dropping the calendar in a Datetimepicker, where I have it responding to a C or c.

A safer method is to use the DroppedDown property. Just set it to true.