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Getting data with HttpWebRequest is straightforward, until it isn't... My program stopped working recently, returning a 401 unauthorized from my request. I knew I was sending the right credentials. A random newsgroup thread tipped me off to the solution: HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Credentials = CredentialCache.DefaultCredentials;
request.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, " +
"application/vnd.ms-excel, application/vnd.ms-powerpoint, " +
"application/msword, */*";
WebResponse response = request.GetResponse();
The key is setting the Accept property; I wasn't doing that before. I don't know what happened on the server that makes it now require this header, but now it works...
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