Question

之前已经提出过这个问题，并且有一个答案应该有效here。但我已经尝试过了，它对我不起作用。

问题是Win32_DiskDrive上的Query返回的PNPDeviceID和“Device”类返回的PNPDeviceID是不同的。例如，在我的情况下，查询返回类似于 - PNPDeviceID： USBSTOR \ DISK＆amp; VEN_ABCD＆amp; PROD_1234＆amp; REV_0001 \ 8＆amp; 2C3C9390＆amp; 0 的东西，而Device类返回实际的VID / PID组合 - ＆gt;的 USB \ VID_4568＆安培; PID_QWER＆安培; MI_00 \ 7和; 15b8d7f0和3＆安培; 0000

因此Win32_DiskDrive上的SELECT查询总是失败。

主要代码：

    var usbDevices = GetUSBDevices();

    //Enumerate the USB devices to see if any have specific VID/PID
    foreach (var usbDevice in usbDevices)
    {
        if (usbDevice.DeviceID.Contains("ABCD") && usbDevice.DeviceID.Contains("1234"))
        {
            foreach (string name in usbDevice.GetDiskNames())
            {
                //Open dialog to show file names
                Debug.WriteLine(name);
            }
        }                   
    }

USBDeviceInfo类

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; }

    public IEnumerable<string> GetDiskNames()
    {
        using (Device device = Device.Get(PnpDeviceID))
        {
            // get children devices
            foreach (string childDeviceId in device.ChildrenPnpDeviceIds)
            {
                // get the drive object that correspond to this id (escape the id)
                Debug.WriteLine(childDeviceId.Replace(@"\", @"\\") );
                foreach (ManagementObject drive in new ManagementObjectSearcher("SELECT DeviceID FROM Win32_DiskDrive WHERE PNPDeviceID='" + childDeviceId.Replace(@"\", @"\\") + "'").Get())
                {

                    foreach (PropertyData usb in drive.Properties){
                        if (usb.Value != null && usb.Value.ToString() != "")
                        {
                            Debug.Write(usb.Name + "=");
                            Debug.Write(usb.Value + "\r\n");
                        }
                    }

                    // associate physical disks with partitions
                    foreach (ManagementObject partition in new ManagementObjectSearcher("ASSOCIATORS OF {Win32_DiskDrive.DeviceID='" + drive["DeviceID"] + "'} WHERE AssocClass=Win32_DiskDriveToDiskPartition").Get())
                    {
                        // associate partitions with logical disks (drive letter volumes)
                        foreach (ManagementObject disk in new ManagementObjectSearcher("ASSOCIATORS OF {Win32_DiskPartition.DeviceID='" + partition["DeviceID"] + "'} WHERE AssocClass=Win32_LogicalDiskToPartition").Get())
                        {
                            yield return (string)disk["DeviceID"];
                        }
                    }
                }
            }
        }
    }

作为旁注，我可以使用“Model”属性传递获取Query，然后找到驱动器号，如here所述。但我正在寻找一种可以将VID / PID与驱动器号联系起来的解决方案。

Answer 1

我有完全相同的问题，经过一周的努力工作后，我终于得到了解决方案。我还为一个设备获得了两个链接（带有vid和pid的链接以及一个包含“USBSTOR ....”的链接）。我认为这不是解决问题的最佳方法，但（直到现在）它才有效。

我使用了两个功能：

第一个是找到具有特定VID和PID的USBHub，还可以找到相关的第二个链接（“USBSTOR ....”）。此链接很重要，因为它形成了与驱动器号的连接。名为“USBobjects”的列表包含许多相关链接（USBHub，USBSTOR，....），它们指的是所有连接的设备。我发现USBSTOR链接出现在链接之后，其中包含VID和PID。我将“USBStOR ...”链接存储为字符串，并将其用于第二个函数以查找DiskDrive的相关PNPEntity。这导致正确的DiskPartition以及LogicalDisk =驱动器号。

希望不会迟到，这两个功能都会对你有帮助！

第一功能：

    public void FindPath()
    {
        foreach (ManagementObject entity in new ManagementObjectSearcher("select * from Win32_USBHub Where DeviceID Like '%VID_XXXX&PID_XXXX%'").Get())
        {
            Entity = entity["DeviceID"].ToString();

            foreach (ManagementObject controller in entity.GetRelated("Win32_USBController"))
            {
                foreach (ManagementObject obj in new ManagementObjectSearcher("ASSOCIATORS OF {Win32_USBController.DeviceID='" + controller["PNPDeviceID"].ToString() + "'}").Get())
                {
                    if(obj.ToString().Contains("DeviceID"))
                        USBobjects.Add(obj["DeviceID"].ToString());

                }
            }

        }

        int VidPidposition = USBobjects.IndexOf(Entity);
        for (int i = VidPidposition; i <= USBobjects.Count; i++ )
        {
            if (USBobjects[i].Contains("USBSTOR"))
            {
                Secondentity = USBobjects[i];
                break;
            }

        }
    }

＆GT;

第二功能：

    public void GetDriveLetter()
    {
        foreach (ManagementObject drive in new ManagementObjectSearcher("select * from Win32_DiskDrive").Get())
            {
                if (drive["PNPDeviceID"].ToString() == Secondentity)
                {
                    foreach (ManagementObject o in drive.GetRelated("Win32_DiskPartition"))
                    {
                        foreach (ManagementObject i in o.GetRelated("Win32_LogicalDisk"))
                        {
                            Console.WriteLine("Disk: " + i["Name"].ToString());
                        }
                    }
                }
        }
    }

＆GT;

Answer 2

非常感谢@Michaela提供了非常有帮助的答案，但我认为这段代码更短

public void FindPath()
{
   ManagementObjectSearcher entity = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
   foreach (ManagementObject obj in entity.Get())
   {
      if (obj["PNPDeviceID"].ToString().Contains("USBSTOR"))
      {
         if (!USBobjects.Contains(obj["PNPDeviceID"].ToString()))
            USBobjects.Add(obj["PNPDeviceID"].ToString());
      }
   }
}

我有GetDriveLetter()方法的另一个问题，有时编译foreach行需要很长时间。有人可以告诉我原因吗？

Answer 3

 DriveInfo[] ListDrives = DriveInfo.GetDrives();

            foreach (DriveInfo Drive in ListDrives)
            {
                if (Drive.DriveType == DriveType.Removable)
                {
                    try
                    {
                        Console.WriteLine(Drive.Name);
                    }
                    catch (Exception ex)
                    {    
                        Console.WriteLine(ex.Message);
                    }                     
                }
            }

从USB VID / PID查找可移动磁盘的Windows驱动器号

3 个答案: