public WebService1() { _parameterHandler = new ParameterHandler(); _debugLogHandler = new DebugLogHandler(); _serialPort = SerialPortManager.Instance; _buadrate = Int32.Parse(ConfigurationManager.AppSettings["buadrate"]); _portName = ConfigurationManager.AppSettings["portName"]; if (!_serialPort.IsOpen) { _serialPort.Open(_portName); } stackTrace = new StackTrace(); }