get items under "MODEM" of device manager c# win. form

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As we go to device manager it shows us a Node (MODEMS) that are connected to our pc. How to get all com port no. and name of each modem connected to my pc in c# win. form.

I have already tried

mSearch = new ManagementObjectSearcher("Select * from Win32_SerialPort");

and

mSearch = new ManagementObjectSearcher("Select * from Win32_POTSModem");

but 1 out of 15 pc's does not shows result.

Thanks In Advance.

Posted 25-Jan-14 16:30pm

agent_kruger

Updated 29-Jan-14 6:47am

v2

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Vedat Ozan Oner 26-Jan-14 7:29am

there is a good example here: http://stackoverflow.com/questions/3331043/get-list-of-connected-usb-devices

Sergey Alexandrovich Kryukov 26-Jan-14 21:35pm

Yes, but OP asks about serial-port devices...
—SA

Sergey Alexandrovich Kryukov 26-Jan-14 21:36pm

Are you sure those modems are installed on these 15 PCs? What are the differences between those systems. These days, having a COM port is a pretty rare thing...
—SA

agent_kruger 27-Jan-14 6:15am

every pc has usb drivers installed and modem's software is installed too.

[no name] 29-Jan-14 20:02pm

You have edited the question without adding anything. The question is too general. 1 out of 15 pcs? Are they all running the same OS? Are you testing the same device on all pcs? Can you see the modem in device manager in all pcs? You are the guy at the coalface. We cannot guess what you are seeing. You need to be extremely clear about your problem.

agent_kruger 19-Feb-14 5:22am

sir, some are running on windows 8 and other on XP. Error occured on one of the XP OS pc. I check it in the devise manager under modem tab it showed the name and comport. Any suggestions what to do now?

[no name] 19-Feb-14 5:46am

So the question is "Does not work in XP". Many possibilities. Do you have correct driver? What version of .NET? Find another XP machine and test on it to confirm. It is up to you to narrow it down.

agent_kruger 19-Feb-14 6:10am

driver's are installed as it is sending message with it's own application of "Airtel 3G" dongle and .net 3.5 as i ave developed application in VS2008 and it works fine on oter XP pc's.

[no name] 19-Feb-14 7:50am

Clearly not a programming question then is it.

agent_kruger 19-Feb-14 8:38am

just cannot understand where the problem is because everything is just normal but still it is not working.

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User 59241 · Accepted Answer · 2014-01-26T17:08:00

Solution 2

Does this help?

How to write WMI Query to find USB MODEMS IN C#[^]

Posted 26-Jan-14 17:08pm

User 59241

Comments

Sergey Alexandrovich Kryukov 26-Jan-14 23:17pm

Agree, I thought the same way. My 5.
—SA

Sergey Alexandrovich Kryukov · Accepted Answer · 2014-01-26T15:40:00

Solution 1

Please see my comment to the question. Maybe you need another WMI class, "Win32_POTSModem": http://msdn.microsoft.com/en-us/library/aa394360%28v=vs.85%29.aspx[^].

See also these classes:
http://msdn.microsoft.com/en-us/library/aa394354%28v=vs.85%29.aspx[^],
http://msdn.microsoft.com/en-us/library/aa394361%28v=vs.85%29.aspx[^].

—SA

Posted 26-Jan-14 15:40pm

Sergey Alexandrovich Kryukov

Comments

[no name] 26-Jan-14 23:13pm

More explanation from OP would help but I think this is the path.

Sergey Alexandrovich Kryukov 26-Jan-14 23:16pm

Agree, than you very much.
—SA