private string Login()
        {
            StringBuilder sbRequestData = new StringBuilder();//请求参数

            sbRequestData.Append("LoginID=00000@00000");
            sbRequestData.Append("&LoginPsw=00000");
            // 发送请求
            StringBuilder sbUrl = new StringBuilder(); // 请求URL内容

            sbUrl.Append(baseURL);
            sbUrl.Append(loginURL);


            String strUrl = sbUrl.ToString();

            //解析xml文件
            return(HttpWebResponseUtility.GetResultXML(sbUrl.ToString(), sbRequestData.ToString(), null));


            //        /*
            //             data.IsYzm = false;
            //             data.YZM = '';*/
            //        object loginData = new { LoginID = "00000", LoginPsw = "00000", IsYzm = false, YZM = "" };
            //        var client = new RestClient(baseURL);

            //        var request = new RestRequest(loginURL, Method.POST);
            //        request.AddParameter("LoginID", $"{"00000"}@{"00000"}"); // adds to POST or URL querystring based on Method
            //        request.AddParameter("LoginPsw", "00000"); // adds to POST or URL querystring based on Method

            //        IRestResponse response = client.Execute(request);
            //        var content = response.Content; // raw content as string
            //        CY.Iot.Common.Message msg = JsonConvert.DeserializeObject<CY.Iot.Common.Message>(content);
            //        if (msg.Result)
            //        {
            //            return "";
            //        }
            //        else
            //            return msg.Data.ToString();
        }