I have an RadUpload with nothing special configured in my Silverlight XAML.
The Handler in the Code behind is also straight forward.
In the RadUploadHandler at server side I throw an exception.
But in RadUpload_OnFileUploadFailed I can't get the message. e.ErrorMessage is an empty string, no other property of e contains the message.
In the code of RadUploadHandler I can see that exceptions are caught and message is sent back to client like following in method ProcessRequest:
this.AddReturnParam("RadUAG_message", (object) ex.Message);
Also Fiddler shows that the message is sent to the client. Why it doesn't appear in the FileUploadFailedEventArgs?