C# How to translate virtual keycode to char?

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
  {
     const int WM_KEYDOWN = 0x100;

     if (msg.Msg == WM_KEYDOWN)
     {
        // 2 is used to translate into an unshifted character value
        int nonVirtualKey = MapVirtualKey((uint)keyData, 2);

        char mappedChar = Convert.ToChar(nonVirtualKey);
     }

     return base.ProcessCmdKey(ref msg, keyData);
  }

KeysConverter kc = new KeysConverter();
string keyChar = kc.ConvertToString(keyData);