How do I handle errors from a call to an http handler routine on the server?

Question

I have written an http handler for the server. It is used for file uploads. It works fine.
However, if the server gets any kind of exception, I don't seem to get anything back in the Silverlight httpWebRequest.  It seems like something in the communications sees the exception as a  "server not found" type error.  And a
Dialog pops up that appears to NOT be my code that says the message.
For my WCF calls, I implemented a SilverlightFaultBehavior that switched the status code to OK and I was able to get the server exceptions from my WCF calls into my Silverlight app.
But how do I do that for an http handler?  What do I have to add, if anything to the server side and what do I need to do on the Silverlight client side?

Answer 1

How are you calling your service?
You should be doing asynchronous calls and supplying a callback with silverlight.
Check for errors in the callback.
FileListServiceReference.FileListServiceClient proxy = new ITSupport.FileListServiceReference.FileListServiceClient();
proxy.GetFileListCompleted += new EventHandler<ITSupport.FileListServiceReference.GetFileListCompletedEventArgs>(proxy_FileListCompleted);
proxy.GetFileListAsync(fileList);
void proxy_FileListCompleted(object sender, ITSupport.FileListServiceReference.GetFileListCompletedEventArgs e)
ObservableCollection<ImageVM> ims = new ObservableCollection<ImageVM>();
if (e.Error == null)
That does stuff if there's no errors and returns nothing if there are but you might want more sophisticated handling.
Hope that helps.
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