Solved

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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