Serial Port in C#
<p>i used FreeSerialPortMonitor Software to watch interactions between a program and a com port
the program send "xxxHave A NICE DAY 00100...blahblah" to lift the barrier control by the com port. so i used C#'s SerialPort class writeline method to send the signal to com port, but the barrier is not lifting.What's the problem?</p>
