请求接口模板

 var wc = new WebClient
            {
                BaseAddress = "http://csdk.zzwhxx.com:8002/submitsms.aspx",
                Encoding = Encoding.GetEncoding("GBK")
            };
            var param = new NameValueCollection
            {
                {"accountname", "sdkwhyouzheng"},
                {"accountpwd", "336726"},
                {"mobilecodes", message.Destination},
                {"msgcontent", message.Body}
            };

            wc.QueryString = param;

            var returncode = wc.DownloadString("");