bool _openSerialPort(string serial_port_name) { bool ret = false; //get logsytem var prop_logsystem = testingInfo.GetType().GetProperty("logSystem"); string log_value = (string)prop_logsystem.GetValue(testingInfo); log_value += string.Format("\n-------------------------------\n"); log_value += string.Format("{0}, open serial port {1}\n", DateTime.Now, serial_port_name); prop_logsystem.SetValue(testingInfo, log_value); camera = new Dut.IPCamera <T>(testingInfo, serial_port_name, 57600, 8); ret = camera.Open(); return(ret); }