how to capture the '#' character on different locale keyboards in WPF/C#? -

my wpf application handles keyboard presses , # , * character voip phone.

i have bug though international keyboards, , in particular british english keyboard. listen 3 key , if shift key modifier down fire off event stuff. on british keyboard '£' character. found uk english keyboard has dedicated key '#'. listen particular key, doesn't solve case english shift-3 , countless other keyboards put somewhere else.

long story short, how listen particular character key press, whether it's key combo or single key , react it?

the function below, getcharfromkey(key key) trick.

it uses series of win32 calls decode key pressed.

1) virtual key wpf key

2) scan code virtual key

3) your unicode character

this old post describes in bit more detail.

      public enum maptype : uint       {          mapvk_vk_to_vsc = 0x0,          mapvk_vsc_to_vk = 0x1,          mapvk_vk_to_char = 0x2,          mapvk_vsc_to_vk_ex = 0x3,       }        [dllimport("user32.dll")]       public static extern int tounicode(           uint wvirtkey,           uint wscancode,           byte[] lpkeystate,           [out, marshalas(unmanagedtype.lpwstr, sizeparamindex = 4)]              stringbuilder pwszbuff,           int cchbuff,           uint wflags);        [dllimport("user32.dll")]       public static extern bool getkeyboardstate(byte[] lpkeystate);        [dllimport("user32.dll")]       public static extern uint mapvirtualkey(uint ucode, maptype umaptype);        public static char getcharfromkey(key key)       {          char ch = ' ';           int virtualkey = keyinterop.virtualkeyfromkey(key);          byte[] keyboardstate = new byte[256];          getkeyboardstate(keyboardstate);           uint scancode = mapvirtualkey((uint)virtualkey, maptype.mapvk_vk_to_vsc);          stringbuilder stringbuilder = new stringbuilder(2);           int result = tounicode((uint)virtualkey, scancode, keyboardstate, stringbuilder, stringbuilder.capacity, 0);          switch (result)          {             case -1:                 break;             case 0:                 break;             case 1:                {                   ch = stringbuilder[0];                   break;                }             default:                {                   ch = stringbuilder[0];                   break;                }          }          return ch;       }