Quick fixing shows that it passes through Key.Unknown, as well as other keys such as [and]
So it looks like you cannot (easily) distinguish when this key is pressed.
The MSDN page for System.Windows.Input.Keylists all values, which is much shorter than the version of the .NET framework .
However, if you look e.PlatformKeyCode, this may give you the necessary meaning. However, help for this condition:
key code, .
:
, Macintosh Windows. , "v" ( 51, , , ). PlatformKeyCode, 86. , , SCROLL LOCK Microsoft Windows. Key , PlatformKeyCode - 145 Windows. , Microsoft Windows, . " " MSDN Library. , Macintosh, . Keyboard Layout Services Reference ( ) - Apple Developer Connection.
(Chrome Windows XP) "-" 189