private static void QueryDeviceGroupList(IoTDAClient client) { ListDeviceGroupsRequest req = new ListDeviceGroupsRequest { InstanceId = "1a7ffc5c-d89c-44dd-8265-b1653d951ce0" }; try { var resp = client.ListDeviceGroups(req); Console.WriteLine(resp.HttpStatusCode); Console.WriteLine(resp.Page); foreach (var DeviceGroupResponseDTO in resp.DeviceGroups) { Console.WriteLine(JsonConvert.SerializeObject(DeviceGroupResponseDTO)); } } catch (RequestTimeoutException requestTimeoutException) { Console.WriteLine(requestTimeoutException.ErrorMessage); } catch (ServiceResponseException clientRequestException) { Console.WriteLine(clientRequestException.HttpStatusCode); Console.WriteLine(clientRequestException.ErrorCode); Console.WriteLine(clientRequestException.ErrorMsg); } catch (ConnectionException connectionException) { Console.WriteLine(connectionException.ErrorMessage); } }