如何在不退出应用程序的情况下重启 USB 设备

Question

在我的应用程序中，我使用 USB 设备进行某些操作，有时会发生 USB 断开连接并再次连接的情况，之后我无法从我的应用程序中使用该设备并继续使用它，我需要重新启动应用程序，我如何在不重新启动我的应用程序的情况下使用它？

经过一些帮助，我通过添加代码处理了插拔设备时的事件

    public enum WM : uint
    {
        /// <summary>
        /// Notifies an application of a change to the hardware configuration of a device or the computer.
        /// </summary>
        DEVICECHANGE = 0x0219,
    }

    protected override void WndProc(ref Message m)
    {

        switch ((WM)m.Msg)
        {
            case WM.DEVICECHANGE:
                MessageBox.Show(m.ToString(), "USB Detected",MessageBoxButtons.OK,MessageBoxIcon.Information);
                break;
        }
        base.WndProc(ref m);
    }

输出是：

{msg=0x219 (WM_DEVICECHANGE) hwnd=0x90242 wparam=0x7 lparam=0x0 result=0x0}

问题是我需要更多信息来表明它是正确的设备

尝试为此目的使用 SharpUSBLib dll 但没有成功，我可以为此目的使用什么？

谢谢

Answer 1

解决方案之一

public partial class Form1 : Form
{

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {

    }

    public enum WM : uint
    {
        /// <summary>
        /// Notifies an application of a change to the hardware configuration of a device or the computer.
        /// </summary>
        DEVICECHANGE = 0x0219,
    }

    protected override void WndProc(ref Message m)
    {

        switch ((WM)m.Msg)
        {
            case WM.DEVICECHANGE:

                var usbDevices = GetUSBDevices();
                txtInfo.Text = string.Empty;

                foreach (var usbDevice in usbDevices)
                {
                    if (usbDevice.Name.Contains("Name of my usb device"))
                    {
                        // Code ..
                    }
                }
                break;
        }
        base.WndProc(ref m);
    }

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

        ManagementObjectCollection collection;
        using (var searcher = new ManagementObjectSearcher(@"Select * From Win32_PnPEntity where DeviceID Like ""USB%"""))
            collection = searcher.Get();

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

        collection.Dispose();
        return devices;
    }
}

class USBDeviceInfo
{
    public string Name { get; private set; }
    public string DeviceID { get; private set; }
    public string PnpDeviceID { get; private set; }
    public string Description { get; private set; }

    public USBDeviceInfo(string name, string deviceID, string pnpDeviceID, string description)
    {
        this.Name = name;
        this.DeviceID = deviceID;
        this.PnpDeviceID = pnpDeviceID;
        this.Description = description;
    }
}

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