Threading with WPF Images (System.InvalidOperationException)

Question

I\'m using a thread to get an image from a website and shoot it back to the parent form (WPF) to display. I ran into an issue and have managed to debug it to this example:

Answer 1

Instead of

if (!this.imgVideo.Dispatcher.CheckAccess())
  {
    SetImageCallback del = new SetImageCallback(SetImage);
    this.Dispatcher.Invoke(del, bmp, bmpImg);
  }

try using :

if (!App.Current.Dispatcher.CheckAccess())
                App.Current.Dispatcher.Invoke(DispatcherPriority.Normal, new Action(SetImage),CustomeObjectInstance );

Here Cutom object will be a wrapper class wrapping

Bitmap bmp, BitmapImage bmpImg

Obviously, your SetImage signature will change to

SetImage(CutomObject custObj)

I have not tested the code but this may solve the issue. Let us know if this works so that some poor soul can be benefitted from this post. All the best! Sid