The XmlReader class cannot parse authentication information from the URL, you have to create an XmlSettings instance and set its XmlResolver property to an XmlUrlResolver instance that has its credentials set to the username and password. Then when you create the XmlReader instance, you supply the custom XmlSettings instance. The following code would do the trick:
// Create a resolver with your credentialsXmlUrlResolver resolver = new XmlUrlResolver();resolver.Credentials = new NetworkCredential("myusername", "mypassword");// Set the reader settings object to use the resolver.XmlReaderSettings settings = new XmlReaderSettings();settings.XmlResolver = resolver;string url = "https://mail.google.com/mail/feed/atom";// Create the reader using the specified URL and settingsXmlReader reader = XmlReader.Create(url, settings);SyndicationFeed feed = SyndicationFeed.Load(reader);reader.Close();However, I tried this code and the following XmlException was thrown:"The element with name 'feed' and namespace 'http://purl.org/atom/ns#' is not an allowed feed format."
It appears that the feeds Google outputs are in a format that is incompatible with the SyndicationFeed class. For more information see: http://www.eggheadcafe.com/tutorials/csharp/9faa101f-0a1a-465f-a41a-3e52dd9f7526/everything-rss--atom-feed-parser.aspx
