available serial port for selection

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hi i want to use serial port, and have 2 combo boxes as SerialPort PortName(combo box1) and SerialPort BaudRate(combo box2). i want to use SerialPort PortName for available ports and display just them on combo box, not other ports that maybe not available
what shall i do for this?

Posted 1-Nov-13 20:15pm

mohsenvasefi

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OriginalGriff · Answer 1 · 2013-11-02T00:16:00

You can find out what ports are (probably) availble with SerialPort.GetNames[^] - but...this queries the registry, so it may be inaccurate in that it can return ports that aren't there any more.

And there is no "automatic" system fort detecting "available" ports - if a port is in use by another program it will not be "available" but AFAIK the only way to check is to try opening it and catching the exception.