Я получаю исключение nul reference при извлечении данных из сервиса arcgis и отображении их в сетке данных преобразование в json в datatable

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I am getting nul reference exception while fetching data from arcgis service and showing them into a data grid converting into json to datatable

Я получаю исключение null reference в этой строке:

foreach (var features in results.features)

результат.функции, показывающие ноль, но значение приходит в результатах. вот мой код ниже.

Что я уже пробовал:

public static string GISSERVER = ConfigurationManager.AppSettings["GISSERVER"].ToString();
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        private void BindDummyRow()
        {
            DataTable dummy = new DataTable();
           
            dummy.Columns.Add("VILLAGE");
            dummy.Columns.Add("TEHSIL");
            dummy.Columns.Add("DISTRICT");
            dummy.Columns.Add("STATE");
            dummy.Rows.Add();
            gvEmg.DataSource = dummy;
            gvEmg.DataBind();
        }

        [WebMethod]
        public static string GetData()
        {
            string url = "";
            DataTable dt = new DataTable();
            dt.Columns.Add("VILLAGE", typeof(System.String));
            dt.Columns.Add("STATE", typeof(System.String));
            dt.Columns.Add("DISTRICT", typeof(System.String));
            dt.Columns.Add("TEHSIL", typeof(System.String));

            var client = new RestClient(GISSERVER);//"http://example.com");
            // client.Authenticator = new HttpBasicAuthenticator(username, password);

            var request = new RestRequest(url, Method.GET);
            request.AddParameter("Where", "OBJECTID>0"); // adds to POST or URL querystring based on Method


            request.AddParameter("geometryType", "esriGeometryEnvelope");
            request.AddParameter("spatialRel", "esriSpatialRelIntersects");
            request.AddParameter("outFields", "STATE,DISTRICT,TEHSIL,VILLAGE");
            request.AddParameter("returnGeometry", "false");
            request.AddParameter("returnIdsOnly", "false");
            request.AddParameter("returnCountOnly", "false");
            request.AddParameter("returnZ", "false");
            request.AddParameter("returnM", "false");
            request.AddParameter("returnDistinctValues", "false");
            request.AddParameter("f", "pjson");

            RestResponse response = (RestResponse)client.Execute(request);
            var content = response.Content; // raw content as string      

            var results = Newtonsoft.Json.JsonConvert.DeserializeObject<dynamic>(content);
            //JObject jalbum = results.results[0].value.features[0] as JObject;
            //var total = results.features.length();
             

            foreach (var features in results.features)
            {

                var village1 = (string)features.attributes["VILLAGE"];
                var state1 = (string)features.attributes["STATE"];
                var dstrict1 = (string)features.attributes["DISTRICT"];
                var Taluk1 = (string)features.attributes["TEHSIL"];
                var village2 = village1.Trim();
                var state2 = state1.Trim();
                var dstrict2 = dstrict1.Trim();
                var Taluk2 = Taluk1.Trim();

                if (village2 == "" || state2 == "" || dstrict2 == "" || Taluk2 == "")
                {
                }
                else
                {
                    DataRow dr = dt.NewRow();
                    dr["VILLAGE"] = village1;
                    dr["STATE"] = state1;
                    dr["DISTRICT"] = dstrict1;
                    dr["TALUK"] = Taluk1;
                    dt.Rows.Add(dr);
                }

            }
            DataSet ds = new DataSet();
            ds.Merge(dt);
            return ds.GetXml();

        }

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