Thank you for your reply.  I have been able to get my dropdown to show up on the toolbar using the above example.  It won't work until you specity the dropdown in the following call.

 

TemplateItemList="[Bold,Italic]/[World,clients]"

 

My problem now is that I am not able to get it to fire the SelectedItemChanged event.  I am able to get a button's "click" event to work, but not a dropdown's SelectedItemChanged event.  When I select an item in the dropdown it doesn't change to the selected item.  Can you provide an example of adding a custom serverside dropdown control that responds to an event when selecting an item?

 

What am I missing?