How do you pass a BitmapImage from a background thread to the UI thread in WPF?

Question

I have a background thread that generates a series of BitmapImage objects. Each time the background thread finishes generating a bitmap, I would like to show th

Answer 1

In the background thread work with Streams.

For example, in the background thread:

var artUri = new Uri("MyProject;component/../Images/artwork.placeholder.png", UriKind.Relative);

StreamResourceInfo albumArtPlaceholder = Application.GetResourceStream(artUri);

var _defaultArtPlaceholderStream = albumArtPlaceholder.Stream;

SendStreamToDispatcher(_defaultArtPlaceholderStream);

In the UI thread:

void SendStreamToDispatcher(Stream imgStream)
{
     dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() =>
     {
        var imageToDisplay = new BitmapImage();
        imageToDisplay.SetSource(imgStream);

        //Use you bitmap image obtained from a background thread as you wish!
     })); 
}