Get Hardware Id of USB Drive.

what I suggest is to use query WMI through winapi to get vid and pid
I don't familiar with MFC but winapi

namespace ConsoleApplication1
{

using System.Text;
using System.Data.Odbc;
using System.Data;
using System.Web;
using System.ComponentModel;
using System.IO;
using System.Net;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Data.OleDb;
using System.Text.RegularExpressions;
using System.Linq;



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)
{
string m_pendid;

Console.WriteLine("Device ID: {0}, PNP Device ID: {1}, Description: {2}, USBVersion: {3}, SystemName: {4}",
usbDevice.DeviceID, usbDevice.PnpDeviceID, usbDevice.Description, usbDevice.usbversion, usbDevice.SystemName);

// m_pendid=catch["usbDevice.DeviceID"];
m_pendid = usbDevice.DeviceID;



Console.WriteLine("Test" + m_pendid);



}

// Console.Write("DeviceID :DeviceID");
Console.Read();




}

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

ManagementObjectCollection collection;
using (var searcher = new ManagementObjectSearcher(@"Select * From Win32_USBHub"))
collection = searcher.Get();

foreach (var device in collection)
{
devices.Add(new USBDeviceInfo(
(string)device.GetPropertyValue("DeviceID"),
(string)device.GetPropertyValue("PNPDeviceID"),
(string)device.GetPropertyValue("Description"),
(string)device.GetPropertyValue("USBVersion"),
(string)device.GetPropertyValue("SystemName")

));

}

collection.Dispose();
return devices;
}
}

class USBDeviceInfo
{
public USBDeviceInfo(string deviceID, string pnpDeviceID, string description, string usbversion1, string SystemName2)
{
this.DeviceID = deviceID;
this.PnpDeviceID = pnpDeviceID;
this.Description = description;
this.usbversion = usbversion1;
this.SystemName = SystemName2;
}
public string DeviceID { get; private set; }
public string PnpDeviceID { get; private set; }
public string Description { get; private set; }
public string usbversion { get; private set; }
public string SystemName { get; private set; }
}
}