title: C# HttpWebRequest with XML Structured Data
body: <p>I'm developing the client-side of a third party webservice. The purpose is that I send xml-file to the server.
  How should I attach the xml-file to the httpwebrequest? What contentType is needed? More suggestions?</p>
  
  <p>I cannot use mtom or dime.ie because I am using httpwebrequest. I am unable to use WCF either.</p>