private void Listener_KeyUp(object sender, RawKeyEventArgs args) { switch (args.Key.ToString()) { case "LeftShift": key1 = ""; break; case "RightShift": key1 = ""; break; case "LeftCtrl": key1 = ""; break; case "RightCtrl": key1 = ""; break; case "LeftAlt": key1 = ""; break; case "RightAlt": key1 = ""; break; default: key2 = ""; break; } }