What is the difference between the KeyCode and KeyData properties on the .NET WinForms key event argument objects?

Question

The two key event argument classes KeyEventArgs and PreviewKeyDownEventArgs each have two properties, KeyCode and KeyData, wh

Answer 1

The difference that I have observed is that the value in KeyCode only holds a Keys enumeration value for the key that triggered the current firing of the event. KeyData, on the other hand, will contain a logical OR of the value in KeyCode with any modifier keys (CTRL, SHIFT, ALT, etc.) that are held at the time.