I'm sure I'm missing somthing simple here, but in my base combo class I created an onchange method. Its style is set to list, and I went the rout of calling onchange from the programatic and interactive change events and it seemed to be ignored when I select a new value. I tried binding the new method to the value property of the combo box but that also doesn't seem to fire the event. What am I missing here. What I am trying to do is make the interface refresh and update its data as soon as the user selects a new value in the combo box but I don't want the user to have to move to a new control to fire the refresh.