Setting String as Image Source in C#

Question

Well I've looked up several methods to fix this in my Windows Phone 7 app but I can't seem to find anything that works. What confuses me is that I've done something just like this before with no problem, so I'm not sure why it's not working. The code causing me the problem is this:
if (appSettings.Contains("image")) myImage.Source = (string)appSettings["image"]; else myImage.Source = "default.jpg";

The error I get is this

Cannot implicitly convert type 'string' to 'System.Windows.Media.ImageSource.

The reason this confuses me is because I did this Twitter app tutorial, in which you bind the image source directly to a string. So what can I do to fix this?

Answer 1

You need to specify an ImageSource instead of a string when doing it from code:

Uri uri = new Uri("...", UriKind.Absolute); 
ImageSource imgSource = new BitmapImage(uri); 
myImage.Source = imgSource; 

Answer 2

Unless I've not found the right part of Scott's post that you're looking at, he is binding image source to a url.

Specificaly,

ImageSource = tweet.Element("user").Element("profile_image_url").Value

Which would be something like

http://a0.twimg.com/profile_images/1158022545/mickn_normal.jpeg