总线已报告设备描述   DEVPKEY_Device_BusReportedDeviceDesc

模式 winform 语言 c#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace testusb
{
    public partial class Form1 : Form
    {
        [DllImport("setupapi.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        static extern IntPtr SetupDiGetClassDevs(ref Guid classGuid, string enumerator, IntPtr hwndParent, uint flags);

        [DllImport("setupapi.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        static extern bool SetupDiEnumDeviceInfo(IntPtr deviceInfoSet, uint memberIndex, ref SP_DEVINFO_DATA deviceInfoData);

        [DllImport("setupapi.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        static extern bool SetupDiGetDeviceProperty(IntPtr deviceInfoSet, ref SP_DEVINFO_DATA deviceInfoData, ref DEVPROPKEY propertyKey, out int propertyType, IntPtr propertyBuffer, int propertyBufferSize, out int requiredSize, int flags);

        [DllImport("setupapi.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        static extern bool SetupDiDestroyDeviceInfoList(IntPtr deviceInfoSet);

        [StructLayout(LayoutKind.Sequential)]
        struct SP_DEVINFO_DATA
        {
            public int cbSize;
            public Guid classGuid;
            public int devInst;
            public IntPtr reserved;
        }

        [StructLayout(LayoutKind.Sequential)]
        struct DEVPROPKEY
        {
            public Guid fmtid;
            public uint pid;
        }


        public Form1()
        {
            InitializeComponent();
        }

        //按钮事件
        private void button1_Click(object sender, EventArgs e)
        {
            // USB 设备的 Vendor ID (VID) 和 Product ID (PID)
            string vid = "0xFFFF";  //这边写你usb设备的vid
            string pid = "0x0100"; //这边写你usb设备的pid

            Guid guid = new Guid("A5DCBF10-6530-11D2-901F-00C04FB951ED"); // USB 设备类的 GUID
            IntPtr deviceInfoSet = SetupDiGetClassDevs(ref guid, null, IntPtr.Zero, 0x12);

            if (deviceInfoSet.ToInt64() != -1)
            {
                SP_DEVINFO_DATA devInfoData = new SP_DEVINFO_DATA();
                devInfoData.cbSize = Marshal.SizeOf(devInfoData);

                for (uint i = 0; SetupDiEnumDeviceInfo(deviceInfoSet, i, ref devInfoData); i++)
                {
                    DEVPROPKEY propertyKey = new DEVPROPKEY();
                    propertyKey.fmtid = new Guid("540b947e-8b40-45bc-a8a2-6a0b894cbda2"); // DEVPKEY_Device_BusReportedDeviceDesc 的格式 ID
                    propertyKey.pid = 4; // DEVPKEY_Device_BusReportedDeviceDesc 的属性 ID

                    int propertyType;
                    int requiredSize;

                    // 获取设备属性值的大小
                    SetupDiGetDeviceProperty(deviceInfoSet, ref devInfoData, ref propertyKey, out propertyType, IntPtr.Zero, 0, out requiredSize, 0);

                    IntPtr propertyBuffer = Marshal.AllocHGlobal(requiredSize);
					//可以根据你自己的vid pid 来进行判断 
					//string deviceVid = GetDeviceVID(deviceInfoSet, devInfoData);  //获取vid
                    //string devicePid = GetDevicePID(deviceInfoSet, devInfoData); //获取pid 

                    if (SetupDiGetDeviceProperty(deviceInfoSet, ref devInfoData, ref propertyKey, out propertyType, propertyBuffer, requiredSize, out requiredSize, 0))
                    {
                        string propertyValue = Marshal.PtrToStringUni(propertyBuffer);
                        Console.WriteLine("Device Description: " + propertyValue);
                    }

                    Marshal.FreeHGlobal(propertyBuffer);
                }

                SetupDiDestroyDeviceInfoList(deviceInfoSet);
            }
        }
		
		
		//获取vid
        private static string GetDeviceVID(IntPtr deviceInfoSet, SP_DEVINFO_DATA devInfoData)
        {
            DEVPROPKEY devPropKey = new DEVPROPKEY();
            devPropKey.fmtid = new Guid("A45C254E-DF1C-4EFD-8020-67D146A850E0"); // DEVPKEY_Device_HardwareIds 的格式 ID
            devPropKey.pid = 3; // DEVPKEY_Device_HardwareIds 的属性 ID

            int propertyType;
            int requiredSize;

            // 获取设备属性值的大小
            SetupDiGetDeviceProperty(deviceInfoSet, ref devInfoData, ref devPropKey, out propertyType, IntPtr.Zero, 0, out requiredSize, 0);

            IntPtr propertyBuffer = Marshal.AllocHGlobal(requiredSize);

            if (SetupDiGetDeviceProperty(deviceInfoSet, ref devInfoData, ref devPropKey, out propertyType, propertyBuffer, requiredSize, out requiredSize, 0))
            {
                byte[] propertyValueBytes = new byte[requiredSize];
                Marshal.Copy(propertyBuffer, propertyValueBytes, 0, requiredSize);
                Marshal.FreeHGlobal(propertyBuffer);

                string propertyValue = System.Text.Encoding.Unicode.GetString(propertyValueBytes).Trim('\0');

                // 从属性值中提取 VID
                string[] hardwareIds = propertyValue.Split(new string[] { "\0" }, StringSplitOptions.RemoveEmptyEntries);
                foreach (string id in hardwareIds)
                {
                    if (id.StartsWith("USB\\VID_", StringComparison.InvariantCultureIgnoreCase))
                    {
                        string vid = id.Substring(8, 4); // 返回 VID 值
                        return vid;
                    }
                }
            }

            Marshal.FreeHGlobal(propertyBuffer);
            return null;
        }

        //获取pid
        private string GetDevicePID(IntPtr deviceInfoSet, SP_DEVINFO_DATA devInfoData)
        {
            DEVPROPKEY devPropKey = new DEVPROPKEY();
            devPropKey.fmtid = new Guid("A45C254E-DF1C-4EFD-8020-67D146A850E0"); // DEVPKEY_Device_HardwareIds 的格式 ID
            devPropKey.pid = 3; // DEVPKEY_Device_HardwareIds 的属性 ID

            int propertyType;
            int requiredSize;

            // 获取设备属性值的大小
            SetupDiGetDeviceProperty(deviceInfoSet, ref devInfoData, ref devPropKey, out propertyType, IntPtr.Zero, 0, out requiredSize, 0);

            IntPtr propertyBuffer = Marshal.AllocHGlobal(requiredSize);

            if (SetupDiGetDeviceProperty(deviceInfoSet, ref devInfoData, ref devPropKey, out propertyType, propertyBuffer, requiredSize, out requiredSize, 0))
            {
                string propertyValue = Marshal.PtrToStringUni(propertyBuffer);
                Marshal.FreeHGlobal(propertyBuffer);

                // 从属性值中提取 PID
                string[] hardwareIds = propertyValue.Split('&');
                foreach (string id in hardwareIds)
                {
                    if (id.StartsWith("PID_"))
                    {
                        return id.Substring(4, 4); // 返回 PID 值
                    }
                }
            }

            Marshal.FreeHGlobal(propertyBuffer);
            return null;
        }
    }
}

执行结果

电脑上的设备