Get the name of the com port and the devices connected to it

Srividhya Parthasarathy

Hi Friends,

I'm trying to get the list of com port name and the device's name connected to it(eg. COM3- Hauewei Modem 3G). I tried the following where I get only the list of com ports.
string [] ports = SerialPort.GetPortNames();
But I need get both the port name along with the device name.
Help me out friends!!

Thanks in advance for your valuable help.

Regards,
Srividhya

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Javeed M Shaikh15y ago
no problem Srividhya, glad everything is working now.
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Srividhya Parthasarathy15y ago
Hi Javeed,

Thanks for your answer.. and I'm sorry for late response..

I collated tips from your code and finally succeeded in what I searchd for..

Thanks again for your valuable code.
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Sam Hobbs15y ago
When I first read this question I got the impression that the ports are serial communication ports, not over a USB. If that is incorrect then the question is not clear. There is not a standard way for serial devices to identify themselves to Windows. Windows traditionally does not know what is connected to a COM or LPT port. I am not aware of a Windows device driver for a modem; usually Windows just has a device driver that sends and recieves data but I am not aware of a Windows driver for a serial port sending commands to a modem such as the AT commands.

USB device drivers are totally different; they do not have the traditional COMn name and the API for opening a USB device is different.

So if the device driver is for a COMn type of device it is unlikely Windows can tell you what the device is; perhaps WMI can but I doubt it.
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Vulpes15y ago
I haven't tried it but I suspect Javeed's code will just return a list of COM ports rather than the devices connected to them.

To get a USB device, such as the modem you mentioned, you'll have to use Win32_USBHub for which there's a code example here (http://stackoverflow.com/questions/3331043/get-list-of-connected-usb-devices) but I don't know how you're then going to link the devices to their ports.

I did find this thread (http://forums.ni.com/t5/LabVIEW/How-to-find-COM-port-for-a-specific-USB-device/td-p/1029382) which suggests that it can be done using WMI but doesn't provide any code:(

However, it does link to a Microsoft WMI tool which may help you to figure it out.
+1
Javeed M Shaikh15y ago
Hi Srividhya,

Please try the following:

ManagementObjectCollection mReturn;
ManagementObjectSearcher mSearch;
mSearch = new ManagementObjectSearcher("Select * from Win32_SerialPort");
mReturn = mSearch.Get();

foreach (ManagementObject mObj in mReturn)
{
Console.WriteLine(mObj["Name"].ToString());
}

Please do not forget to mark "Accepted Answer".
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