System.Reflection.TargetInvocationException

[Adil]

I am using Telerik reporting in a silverlight application and loading the data by using report service and SQLDataSource. The report could not be rendered and throwing the following Exception:

Error: System.Reflection.TargetInvocationException : An exception occurred during the operation, making the result invalid.  Check InnerException for exception details.
   at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
   at Telerik.Reporting.Service.SilverlightClient.RenderAndCacheEventArgs.get_RenderingResult()
   at Telerik.ReportViewer.Silverlight.ReportViewerModel.OnRenderAndCacheCompleted(Object sender, RenderAndCacheEventArgs e)

------------- InnerException: -------------

System.ServiceModel.ServiceActivationException : The requested service, 'http://www.govansoft.com/CRE.SL/ReportService.svc' could not be activated. See the server's diagnostic trace logs for more information.
   at System.ServiceModel.Channels.Remoting.RealProxy.Invoke(Object[] args)
   at proxy_2.EndRenderAndCache(IAsyncResult )
   at Telerik.Reporting.Service.SilverlightClient.ReportServiceClient.OnEndRenderAndCache(IAsyncResult result)
   at System.ServiceModel.ClientBase`1.OnAsyncCallCompleted(IAsyncResult result)

[Steve]

Hello Adil,

Telerik Reporting WCF Service is standard WCF Service and that is why the error you have received is a generic one. Without more information about your setup and mainly the WCF service registration, we can only guess what is causing the problem.

Our suggestion is to review the articles above for more info on setting the service up as well as these links:

• How to: Add report viewer to a Silverlight application
• Getting Started with the Silverlight Report Viewer for Telerik Reporting video

Additionally a quick search shows various reasons for this error - check them and let us know if further help is needed.
All the best,
Steve
the Telerik team