//declaracion
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        public static extern void mouse_event(int dwflags, int dx, int dy, int cbuttons, int dwExtraInfo);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern bool GetCursorPos(out Point lpPoint);
        [DllImport("user32.dll")]
        public static extern int GetAsyncKeyState(Keys vkeys);
 
 
//metodo
 
if (GetAsyncKeyState(Keys.F10) == -32767)
            {
///funcion
            }
            if (GetAsyncKeyState(Keys.F11) == -32767)
            {
               //funcion
            }