XML : post xml data to server side

Team leader asked me to post some data in other website. I am struggling to do that but it did not work.

XML file must be like this:

  <?xml version="1.0" encoding="utf-8"?>  <LOGGING>  <logging_type>RealData</logging_type>  <vender_id>vender id</vender_id>  <vender>vender name</vender>  <station_ref></station_ref>  <station_id>station id</station_id>  <station_name></station_name>  <send_date>  <year>2015</year>  <month>08</month>  <day>21</day>  </send_date>  <send_time>  <hour>11</hour>  <minute>12</minute>  <second>13</second>  </send_time>  <update_date>  <year>2015</year>  <month>80</month>  <day>21</day>  </update_date>  <update_time>  <hour>12</hour>  <minute>11</minute>  <second>11</second>  </update_time>  <total_data>29</total_data>      …………………………………….….    <status>  <message>Complete</message>  </status>  </LOGGING>     

He gave me url of the website which is "http://infomech.selfip.com/infomech/real_data" and he gave the station name and reference id as well. I have coded this:

   System.Net.WebRequest req = null;      System.Net.WebResponse res = null;        try      {          string uri = txtURL.Text;          req = System.Net.WebRequest.Create(uri);          req.Method = "POST";          req.ContentType = "text/xml";          System.IO.StreamWriter writer = new System.IO.StreamWriter(req.GetRequestStream());          writer.Write(txtSend.Text);          writer.Close();          res.GetResponseStream();      }      catch      {            throw;        }      finally      {          if (req != null) req.GetRequestStream().Close();          if (res != null) res.GetResponseStream().Close();      }        }    

but it does not work. How to do?