C# KeyEventArgs - how to quickly determine if letter/number presse

[Guest]

Is there a way to quickly determine if the key pressed was from 'A'-'Z' or
'0'-'9' range?

I really don't like to write switch with every Keys.A, Keys.B, etc key listed

Paul

 

[Robson Siqueira]

Why don't you convert the pressed key into ASCII representation and then
verify if it matches?

 

[Guest]

Thanks, but to do that I need to get the Char pressed. The pressed key is an
enumerated type Keys (from KeyEventArgs). I could not find a method to
convert it to Char.

Help, please...

 

[Guest]

OK, here is how I did it:

if ( ( ( e.KeyCode >= Keys.A && e.KeyCode <= Keys.Z ) ||
( e.KeyCode >= Keys.D0 && e.KeyCode <= Keys.D9 ) ||
( e.KeyCode >= Keys.NumPad0 && e.KeyCode <= Keys.NumPad9 ) )

However that works on the assumption than Keys enumeration of A-Z and 0-9
are in the continuous range, which makes sense but is not spelled out
anywhere...