One of the new features of Silverlight 4 Beta is the addition of the IDataErrorInfo interface. In Silverlight 3 we throw exceptions when a property value is invalid. The IDataErrorInfo interface has been around in .NET but is new to Silverlight 4 beta. It allows you to invalidate property values wit

If you are at PDC [http://microsoftpdc.com/] this week, please stop by my session [http://microsoftpdc.com/Sessions/CL22]. I will be presenting Advanced Topics for Building Large-Scale Applications with Microsoft Silverlight [http://microsoftpdc.com/Sessions/CL22] at PDC 09 [http://microsoftpdc.com/

I’m a little over a week into my new role as the Silverlight Evangelist at Microsoft and so far it has been a blast! I’ve had a lot of joking questions about how much the implants hurt when they put them in, so I thought I might share with you all a quick behind the scenes looks at the new recruits

Are you planning on attending VSLive Orlando [http://vslive.com/orlando] t [http://vslive.com/2009/orlando/default.aspx]his week? If so, please stop by the 3 sessions I will be presenting at VSLive Orlando and say hi. I really enjoy speaking at the conferences and getting the chance to have great c

My latest Data Points column [http://msdn.microsoft.com/en-us/magazine/ee335695.aspx] is now online and in print in the October 2009 issue of MSDN [http://msdn.microsoft.com/en-us/magazine/ee335695.aspx]Magazine. The column’s title is “Validation with Silverlight 3 and the DataForm [http://msdn.mic