How to solve problem, "The operation has timed out at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context)"

Need to dispose HttpWebResponse

            using (HttpWebResponse webresponse = (HttpWebResponse)webrequest.GetResponse())
            {
                using (var str = new StreamReader(webresponse.GetResponseStream()))
                    {
                        result = str.ReadToEnd();
                    }
                webresponse.Close();
            }

How to deal with "Content-Length or Chunked Encoding cannot be set for an operation that does not write data"

Server send 303 redirection for the request.  Check your request data if anything wrong .

http://en.wikipedia.org/wiki/HTTP_303

Upgrading an MVC4 Visual Studio 2010 Solution to Visual Studio 2012 and .Net 4.5 and EF 5.

http://www.kevinlabranche.com/blog/UpgradingAnMVC4VisualStudio2010SolutionToVisualStudio2012AndNet45AndEF5.aspx

29 New Tools to Develop Your Site

http://www.practicalecommerce.com/articles/3762-29-New-Tools-to-Develop-Your-Site

CalendarExtender CSS Class Style And Themes Asp.Net Ajax

http://csharpdotnetfreak.blogspot.com/2012/06/calendarextender-css-style-theme.html