The image is not updated in the custom image window.

There is a scrollviewer and an image in my custom image window. The dependecy property The type string image is used to set the image.

public static DependencyProperty ImageProperty = DependencyProperty.Register(
"Image", typeof(string), typeof(CustomPictureBox), new FrameworkPropertyMetadata("", new  PropertyChangedCallback(OnImageChanged)));


private static void OnImageChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
  CustomPictureBox cpb = (CustomPictureBox)d;
  if (e.Property == ImageProperty)
  {
    string newvalue = e.NewValue as string;
    if (!(string.IsNullOrEmpty(newvalue)))
    {
      var bmp = new BitmapImage();
      bmp.BeginInit();
      bmp.UriSource = new Uri(newvalue);
      bmp.CacheOption = BitmapCacheOption.OnLoad;
      bmp.EndInit();

      cpb.imgPicture.Source = bmp;
    }
    else
      cpb.imgPicture.Source = null;
  }
}

"camera_image.tif". Image . , Image , . , "camera_image.tif". , . , . , .

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