// Ouverture de la vidéo
        private void ME_VideoSon_MediaOpened(object sender, System.Windows.RoutedEventArgs e)
        {
            LBL_Message.Visibility = Visibility.Collapsed;

            ME_VideoSon.Play();

            BTN_Play.Visibility  = Visibility.Collapsed;
            BTN_Pause.Visibility = Visibility.Visible;

            // Timer permettant d'actualiser le timing
            timer.Interval = new TimeSpan(0, 0, 1);
            timer.Tick    += new System.EventHandler(timer_Tick);
            timer.Start();

            // Indiquer le temps maximum de la vidéo aux scrollbars
            SCR_Temps.Maximum        = ME_VideoSon.NaturalDuration.TimeSpan.TotalSeconds;
            SCR_ChangerTemps.Maximum = ME_VideoSon.NaturalDuration.TimeSpan.TotalSeconds;

            // Afficher un 0 si minutes < 0 ou secondes < 0 pour le temps
            string minutes, secondes;

            secondes = ME_VideoSon.NaturalDuration.TimeSpan.Seconds.ToString("00");
            minutes  = ME_VideoSon.NaturalDuration.TimeSpan.Minutes.ToString("00");

            LBL_TempsTotal.Text = minutes + ":" + secondes;

            // Evènements
            ME_VideoSon.DownloadProgressChanged += new System.Windows.RoutedEventHandler(ME_VideoSon_DownloadProgressChanged);
            LayoutRoot.MouseMove += new System.Windows.Input.MouseEventHandler(LayoutRoot_MouseMove);
            SCR_Temps.MouseEnter += new System.Windows.Input.MouseEventHandler(SCR_Temps_MouseEnter);
            BTN_Play.Click       += new System.Windows.RoutedEventHandler(BTN_Play_Click);
            BTN_Pause.Click      += new System.Windows.RoutedEventHandler(BTN_Pause_Click);
        }
        private void BTN_Play_Click(object sender, System.Windows.RoutedEventArgs e)
        {
            ME_VideoSon.Play();

            BTN_Play.Visibility  = Visibility.Collapsed;
            BTN_Pause.Visibility = Visibility.Visible;

            timer.Interval = new TimeSpan(0, 0, 1);
            timer.Tick    += new System.EventHandler(timer_Tick);
            timer.Start();
        }