How do I load images in the background?

Question

I am trying to load an image in the background and then update the UI. I have been playing with this all day and I don\'t know what I am missing. I keep getting the follow

Answer 1

One more thing we had in our project. Since ImageSource is placed into UI you have to check if it is frozen:

public void SetImage(ImageSource source)
{
   ImageSource src = null;
   if(!source.IsFrozen)
       src = source.GetAsFrozen();
   else
       src = source; 
   this.BackgroundImage.Source = src;
}