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Thread: SerialPort.GetPortNames() does not list one of the comPorts in device manager

  1. Sep 23rd, 2015, 01:59 PM #1
    Lalaluye
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    SerialPort.GetPortNames() does not list one of the comPorts in device manager

    I'm trying to communicate with COM18 listed under Ports in my device manager without success. When I use the function call System.IO.Ports.SerialPort.GetPortNames() to see all the available ports, COM18 is not listed. Does this mean it's not a serial port? I'm trying to send commands to a power supply through USB interface.
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  2. Sep 23rd, 2015, 02:52 PM #2
    Maylar
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    Re: SerialPort.GetPortNames() does not list one of the comPorts in device manager

    Does the device manager listing disappear when you unplug the interface? Is the driver installed correctly?
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  3. Sep 23rd, 2015, 03:34 PM #3
    Lalaluye
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    Re: SerialPort.GetPortNames() does not list one of the comPorts in device manager

    Quote Originally Posted by Maylar View Post
    Does the device manager listing disappear when you unplug the interface? Is the driver installed correctly?
    Yes it disappears when I unplug the interface. The driver that I got from manufacture site is installed correctly I think. It shows up under Ports in device manager.
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  4. Sep 23rd, 2015, 03:47 PM #4
    dbasnett
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    Re: SerialPort.GetPortNames() does not list one of the comPorts in device manager

    Plug the device in. Restart the PC. After the restart check the device manager and try with the name listed.
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