Category Archives: Silverlight

CommunicationException with Silverlight and a cross domain call

You are calling your services from Silverlight but the services are accessed via a different URI than the Silverlight application is being hosted. Errors galore, right?  Silverlight honors the protection that helps mitigate a sites scripts from being called if someone simply copied your app to their server.  The error you get is this:  An… Read More »

Silverlight and WPF Boolean Not Converter…To be or NOT to be

So you have an IsReadOnly flag on your viewmodel, but you want to set the IsEnabled property on control. A conundrum for a binding, right. Well, simple solution to an annoying problem. Use the converter below on your binding and it becomes opposite day. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Data;  … Read More »

Config file issue to make you rip hair out

I spent about 2 hours staring at this lovely cryptic error: Extension element ‘silverlightFaults’ cannot be added to this element.  Verify that the extension is registered in the extension collection at system.serviceModel/extensions/behaviorExtensions I had it setup correctly, but why would the system not compile it? This was the registration: <add name=”silverlightFaults” type=”Seekford.SilverlightFaultBehavior.SilverlightFaultBehavior,Seekford.SilverlightFaultBehavior, Version=, Culture=neutral, PublicKeyToken=7073c134a4dabf61″… Read More »