Comments by appxdev (Top 3 by date)

Yes.
I follow this link to resolve that call service synchronously and add the clientaccesspolicy.xml to client app.
Can you give me some sample for CRUD synchronously.
Thanks

Not simple like that.
Do you know you must do sync or async for this problem?
I posted on .NET 4rum and some technician helped me resolve that problem (you can see more here http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/1ce9a4d1-4a30-44ae-83de-be6661cd4829 )
But i still confuse when develop CRUD (Retrieve is Ok) for Silverlight Client WCF RIA ( not for the Silverlight Client with same solution of Domain Service - it's simple!)