I have a Page with a UserControl on it. If the user presses Esc while anywhere on Page I want to handle.
I thought this would be as easy as hooking up the PreviewKeyDown event, testing for the Esc key, and then handling it. However, when I placed I breakpoint in the event handler I found it was never getting called. I thought perhaps the UserControl might be getting hit, so I tried PreviewKeyDown there... same result.
Does anyone know the proper place to test for a KeyDown or PreviewKeyDown on a Page object?
I believe that the PreviewKeyDown event is a tunneling routed event, rather than a bubbling one. If that is the case, then if your Page isn't getting the event, the UserControl shouldn't be either since it is below the Page in the visual tree. Maybe try handling it at the top level of your app (Window perhaps?) and see if it is getting the event?
Another option that might help would be to use something like Snoop in CodePlex to figure out where the events are going.