C # Post request to work in their default setting, unfortunately, not all web servers.
It can happen that when a misconfigured web server a "(417) Expectation Failed" WebException is thrown, since the web server not a "100-continue back" delivers.
Very annoying stuff and not just well off, but it is yet.
/ / "HTTP_EXPECT" switch off System.Net.ServicePointManager.Expect100Continue = false;
Thank you for the solution to haacked.com .
