public static Boolean DataOut(List <DeviceModel> rows) { RequestModel req = new RequestModel(); req.Data = rows; var client = new RestClient(APIService.GetURL("isa.device.up")); var request = new RestRequest("/", Method.POST) { RequestFormat = DataFormat.Json }; request.AddHeader("Content-Type", "application/json"); request.AddParameter("application/json", JsonConvert.SerializeObject(req), ParameterType.RequestBody); IRestResponse response = client.Execute(request); if (response.StatusCode == HttpStatusCode.OK) { return(true); } return(false); }