.net post请求webservice

class Program
    {
        static void Main(string[] args)
        {
            var m = "m=" + JsonConvert.SerializeObject(new { age = 1, name = "jxp" });
            var a = HttpHelper.PostRequest("http://localhost:7132/Jxp.asmx/HelloWorld", DataTypeEnum.Form, m);
            var xmldoc = new XmlDocument();
            xmldoc.LoadXml(a);
            var nsMgr = new XmlNamespaceManager(xmldoc.NameTable); nsMgr.AddNamespace("ns", "http://tempuri.org/");
            XmlNode errorNode = xmldoc.SelectSingleNode("/ns:string", nsMgr);
            var b = JsonConvert.DeserializeObject(errorNode.InnerText);
            Console.WriteLine(b);
            Console.ReadKey();
        }
    }

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