UTF8Encoding encoding = new UTF8Encoding();            byte[] data = encoding.GetBytes(requestDataXml.ToString());            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);            myRequest.Method = ;            myRequest.ContentType = "application/x-www-form-urlencoded";            myRequest.ContentLength = data.Length;            Stream newStream = myRequest.GetRequestStream();            // 发送数据

newStream.Write(data, 0, data.Length);            newStream.Close();            // 返回数据            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);            string content = reader.ReadToEnd();            XElement xe = XElement.Parse(content);            return xe;