IP address in Silverlight

From what I gather you aren't trying to change the image itself dynamically, but rather to correctly determine the location of the image at runtime.

I believe simply prefixing the image relative URL with "../" should get you to the root of your application, not necessarily the site as the application might not be hosted in the root of a site.

If your XAP file is located as follows:

http://somesite.foo/app1/somethingelse/clientbin/MyFoo.xap

And you where trying to link the following image:

http://somesite.foo/app1/somethingelse/images/a/boo.png

Apparently all relative URI's are relative to where the XAP file is located (ClientBin folder typically) and Silverlight appends the current Silverlight client namespace. So if you Silverlight control is in the namespace Whoppa you would need to put all your images in the clientbin/Whoppa/ directory. Not exactly convenient.

The workaround is to use absolute URIs as follows:

new Uri(App.Current.Host.Source, "../images/a/boo.png");

You can use the javascript API which was originally available in v1 of Silverlight to edit things like the loading animation and also the Install mechanism. Silverlight Javascript API