Thanks for the response, but your sample uses the same event already documented, and adapting your example exactly provides behavior that is no different from other attempts I've made.
The problem is that the event fires BEFORE the dropdownlist updates, retracts the list, and shows the new value. It fires my long-lasting event, so the user is stuck looking at the opened DropDownList for 2-3 seconds. I'll do something else.
Thanks!
