public MainWindow()
        {
            InitializeComponent();

              //MessageBox.Show(imgLeft.Source.GetType().FullName);

              _pictureDataLeft = new PictureData();
              _pictureDataLeft.PropertyChanged += new PropertyChangedEventHandler(OnLeftPictureDataPropertyChanged);

              _pictureDataRight = new PictureData();
              _pictureDataRight.PropertyChanged += new PropertyChangedEventHandler(OnRightPictureDataPropertyChanged);
        }
 private void UpdateImage(TextBox textBox, TextBlock textBlock, Image image, PictureData pictureData)
 {
     var filepath = textBox.Text;
       FileInfo[] files = null;
       if (!string.IsNullOrEmpty(filepath)) {
     var dirInfo = new DirectoryInfo(filepath);
     if (dirInfo.Exists) {
       files = dirInfo.GetFiles("*.jpg");
     }
       }
       if (files != null && files.Count() > 0) {
     // problème de mémoire sur une grande quantité d'images
     //imgListLeft = new ImageList();
     //imgListLeft.Images.Clear();
     //var toto = files.Select(img => System.Drawing.Image.FromFile(img.FullName)).ToArray();
     //imgListLeft.Images.AddRange(toto);
     //var titi = imgListLeft.Images[imgListLeftIndex];
     pictureData.PathList     = files.Select(img => img.FullName).ToArray();
     pictureData.CurrentIndex = 0;
       } else {
     pictureData.PathList     = null;
     pictureData.CurrentIndex = -1;
       }
 }