public MainWindow()
        {
            InitializeComponent();

            MediaBack.Source = new Uri("C:/Content/i5_Back.mp4");
            MediaBack.Play();
            MediaContent.Source = new Uri("C:/Content/i5_Content.mp4");


            Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            IPEndPoint ip = new IPEndPoint(IPAddress.Any, 5003);
            s.Bind(ip);
            ReceiveUdp(s);

        }



        public void ReceiveUdp(Socket s)
        {
            SocketAsyncEventArgs e = new SocketAsyncEventArgs();
            e.SetBuffer(new byte[100], 0, 100);
            e.RemoteEndPoint = new IPEndPoint(IPAddress.Any, 5003);
            e.UserToken = s;
            e.Completed += new EventHandler<SocketAsyncEventArgs>(RecvCompleted);
            s.ReceiveFromAsync(e);
        }

        public void RecvCompleted(object sender, SocketAsyncEventArgs e)
        {
            string Data = Encoding.ASCII.GetString(e.Buffer, e.Offset, e.BytesTransferred);

            ReceiveUdp((Socket)e.UserToken);

            Dispatcher.BeginInvoke(new ThreadStart(delegate
            {
                // label.Content = Data;
                if (Data == "PLAY")
                {

                    if (!locked)
                    {
                        MediaContent.Position = TimeSpan.FromTicks(1);
                        MediaContent.Play();
                        DoubleAnimation FadeIn = new DoubleAnimation(0.0, 1.0, new Duration(TimeSpan.FromSeconds(0.5)), FillBehavior.HoldEnd);
                        DoubleAnimation FadeOut = new DoubleAnimation(1.0, 0.0, new Duration(TimeSpan.FromSeconds(0.5)), FillBehavior.HoldEnd);
                        MediaContent.BeginAnimation(MediaElement.OpacityProperty, FadeIn);
                        MediaBack.BeginAnimation(MediaElement.OpacityProperty, FadeOut);




                        MediaBack.Stop();
                        locked = true;
                    }

                }
                else if (Data == "STOP")
                {
                    if (locked)
                    {
                        MediaBack.Play();
                        DoubleAnimation FadeIn = new DoubleAnimation(0.0, 1.0, new Duration(TimeSpan.FromSeconds(0.5)), FillBehavior.HoldEnd);
                        DoubleAnimation FadeOut = new DoubleAnimation(1.0, 0.0, new Duration(TimeSpan.FromSeconds(0.5)), FillBehavior.HoldEnd);
                        MediaBack.BeginAnimation(MediaElement.OpacityProperty, FadeIn);
                        MediaContent.BeginAnimation(MediaElement.OpacityProperty, FadeOut);
                        MediaContent.Stop();

                        locked = false;

                    }

                }


            }));
        }