The Media Center Sandbox

How do I tell Media Center to play the next track in a playlist from code?

I tried this,

[DllImport("User32.dll", EntryPoint = "SendMessage")]
        public  static extern int SendMessage(int hWnd, int Msg, int wParam, ref COPYDATASTRUCT lParam);
        private const int HWND_BROADCAST = 0xffff;
        private const int WM_APPCOMMAND = 0x319;
        private const int APPCOMMAND_MEDIA_NEXTTRACK = 11;

        [StructLayout(LayoutKind.Sequential)]
        public struct COPYDATASTRUCT
        {
            public IntPtr dwData;
            public int cbData;
            public IntPtr lpData;
            public static COPYDATASTRUCT Empty
            {
                get
                {
                    COPYDATASTRUCT copydatastruct = new COPYDATASTRUCT();
                    copydatastruct.dwData = IntPtr.Zero;
                    copydatastruct.cbData = 0;
                    copydatastruct.lpData = IntPtr.Zero;
                    return copydatastruct;
                }
            }

        }


 var empty = COPYDATASTRUCT.Empty;
var result = SendMessage(HWND_BROADCAST, WM_APPCOMMAND, APPCOMMAND_MEDIA_NEXTTRACK, ref empty);

it killed my computer