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I'm working on a Windows Phone app. Usually I would use a WebClient however, in this specific case I've been told that I need to use a HttpWebRequest. I can successfully fire off the request. However, occassionally it fails. Either because of a network issue or an exception thrown by the server. How do I detect an error associated with the IAsyncResult approach? Currently, I have the following:

private void HttpWebRequest_Completed(IAsyncResult result)
{
  WebRequest request = (WebRequest)(result.AsyncState);
  WebResponse response = request.EndGetResponse(result);

  // Detect if there was an error right here. 
  ...
}

My code works fine unless there was an error. I'm not sure how to detect errors though. Thank you!

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I'd expect EndGetResponse to throw the same exception which would be thrown directly if you'd called the synchronous GetResponse method.

于 2012-08-10T11:46:21.043 に答える