ButtonBase.OnKeyDown Method (KeyEventArgs)
Provides class handling for the KeyDown routed event that occurs when the user presses a key while this control has focus.
Assembly: PresentationFramework (in PresentationFramework.dll)
The user presses the SPACEBAR.
The user presses ENTER and AcceptsReturn is true for this control.
Notes to Inheritors:
If you override, always call the base implementation in your implementation. Failure to call the base implementation prevents base classes from handling the event with a class handler, which might change the run-time behavior of the final class. You can call the base implementation either before or after your special handling, depending on your requirements.
Available since 3.0
Available since 2.0
Windows Phone Silverlight
Available since 7.0