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check if vendor_id / device_id exists,

Posted on 2010-11-17
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Last Modified: 2012-05-10
Hi Experts,

I have two USB modems from different manufacturers, i want my c# script to determine whether it's a Zyxel or a Thomson.

Does anyone have code samples, links or examples that show how c# can retrieve vendor and device id?

Having a look around i'm not even sure it's possible in dotnet without hardware or a USB bus API or somesuch.

Many thanks,

Jon
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Question by:jondanger
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Expert Comment

by:arif_eqbal
ID: 34162525
Life would be easy if you had an interface/DLL from the vendors but looks like you want a generic way since you would be communicating with devices from different vendors

Try to see if this helps
http://www.developerfusion.com/article/84338/making-usb-c-friendly/
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LVL 19

Expert Comment

by:arif_eqbal
ID: 34162539
A quick look on the net lead to this...
http://www.codeproject.com/KB/cs/USB_HID.aspx

Looks like this is also based on the previous article but it might be easier to use from C# if the code here is a DLL or something...
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Author Comment

by:jondanger
ID: 34163406
Thanks arif_eqbal, i'd seen both of those links but can't get very far with either.

You're right in that i'd like a generic way.

I think something like parsing the output of Windows' lsusb equivalent will be the answer, but it's not very elegant.


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Accepted Solution

by:
jondanger earned 0 total points
ID: 34163656
Found this:
namespace ConsoleApplication1
{
    using System;
    using System.Collections.Generic;
    using System.Management; // need to add System.Management to your project references.

    class Program
    {
        static void Main( string[] args )
        {
            var usbDevices = GetUSBDevices();

            foreach ( var usbDevice in usbDevices )
            {
                Console.WriteLine( "Device ID: {0}, PNP Device ID: {1}, Description: {2}",
                    usbDevice.DeviceID, usbDevice.PnpDeviceID, usbDevice.Description );
            }
        }

        static List<USBDeviceInfo> GetUSBDevices()
        {
            List<USBDeviceInfo> devices = new List<USBDeviceInfo>();

            var searcher = new ManagementObjectSearcher( @"Select * From Win32_USBHub" );

            foreach ( var device in searcher.Get() )
            {
                devices.Add( new USBDeviceInfo(
                ( string )device.GetPropertyValue( "DeviceID" ),
                ( string )device.GetPropertyValue( "PNPDeviceID" ),
                ( string )device.GetPropertyValue( "Description" )
                ) );
            }

            return devices;
        }
    }

    class USBDeviceInfo
    {
        public USBDeviceInfo( string deviceID, string pnpDeviceID, string description )
        {
            this.DeviceID = deviceID;
            this.PnpDeviceID = pnpDeviceID;
            this.Description = description;
        }
        public string DeviceID { get; private set; }
        public string PnpDeviceID { get; private set; }
        public string Description { get; private set; }
    }
}

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Author Closing Comment

by:jondanger
ID: 34194901
found some code on stackoverflow that i can modify.
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