Looking for a XAML trick to disable all other TOOLBAR buttons when one is clicked

I've got a tool bar that I fill programmatically with a bunch of tool bar buttons.

I would like to make it so that when you click one all of the others are kind of disabled - or maybe the whole tool bar becomes disabled - until the "process" started by that button click completes.

I've not done much XAML effects - but I've seen all kinds of things that you can do.

Anything possible that I'm not aware of?

Thanks!