Generally when I want to add a shortcut key to a control that doesn't have the shortcut key property I do this:
- Add a Menu Strip to the form, with it's visibility to false
- Add a Menu Item to the Menu Strip with my desired shortcut key assigned
- In the menu item's click event call the event handler for the whatever you would have tied the shortcut key too
It's kind of a roundabout way to do it, but it works.
Hope this helps.