C# 实现：SOAP接口调用与XML拼接实体类封装

 #region WebService 调用封装实体的接口 SOAP 1.1
        /// <summary>
        /// wcf接口 SOAP 1.1
        /// </summary>
        /// <param name="wcfURL">WCF接口地址</param>
        /// <param name="soapAction">soapAction</param>
        /// <param name="data">数据</param>
        /// <returns></returns>
        public static string HtppSoapRequest(string wcfURL, string soapAction,byte[] data)
        {
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(wcfURL);
            request.Method = "POST";
            request.ContentType = "text/xml";
            request.Headers.Add("SOAPAction", "\"" + soapAction + "\"");
            // 凭证
            request.Credentials = CredentialCache.DefaultCredentials;
            // 超时时间
            request.Timeout = 120000;
            request.ContentLength = data.Length;
            Stream writer = request.GetRequestStream();
            writer.Write(data, 0, data.Length);
            writer.Close();
            var response = request.GetResponse();
            XmlDocument doc = new XmlDocument();
            StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
            String retXml = sr.ReadToEnd();
            sr.Close();
            doc.LoadXml(retXml);
            XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable);
            mgr.AddNamespace("soap", "http://schemas.xmlsoap.org/soap/envelope/");