DataServicesQuery in ViewModel gives Exception -- "access is denied"

09-06-2009 2:37 PM |

Hi , i am using Silverlight navigation framework , i am using viewmodel for each page ( Navigation page ) . In the viewmodel this line , query.BeginExecute ( query is an instance of DataServiceQuery) throws invalidoperationexception with message saying access is denied . NOTE :I am instancing the viewmodel class in the codebehind class of the page( Navigation page ) and this is my gut feeling that this is the problem , here is the complete code of view model. public class HomeViewModel { public HomeViewModel() { V3C_DataBaseEntities entities = new V3C_DataBaseEntities(new Uri("http://localhost:59474/V3CDataService.svc/", UriKind.Absolute)); var r = from c in entities.ChatRoomSet select c; DataServiceQuery query = (DataServiceQuery)r; // now below line gets crashed!!!!!!!!!!!!!!! query.BeginExecute(new AsyncCallback(LoadRooms), query); } private static void LoadRooms(IAsyncResult asyncResult) { DataServiceQuery query = (DataServiceQuery)asyncResult.AsyncState; List temp = query.EndExecute(asyncResult).ToList(); } thanks Jamal.