private static void WriteEnableTariffFunction(string portName, SmlComServiceClient proxy, Guid clientGuid, bool isOn) { Console.WriteLine("Setting Enable Tariff function to: " + isOn); proxy.WriteEnableTariffFunction(clientGuid, portList.FirstOrDefault(m => m.ComPortName == portName), isOn); var result = proxy.ReadEnableTariffFunction(clientGuid, portList.FirstOrDefault(m => m.ComPortName == portName)); Console.WriteLine("Tariffs enabled read: " + result.Data); Console.WriteLine(); }