C# C如何知道可移动磁盘是usb驱动器还是sd卡？

Windows7平台，C

我使用以下语句列出所有驱动器：

DriveInfo[] drives = DriveInfo.GetDrives();

然后我可以使用DriveType查找所有这些可移动磁盘：

foreach (var drive in drives)
{
     if(drive.DriveType == DriveType.Removable)
         yield return drive;
}

现在我的问题是，SD卡磁盘和USB闪存盘共享相同的驱动器类型：可移动，那么我如何才能只找到USB闪存盘

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谢谢

我不得不在一个旧项目中检查USB设备，并这样解决：

我获取GUID并检查设备GUID是否为USB-GUID。

您可以利用ManagementObjectSearcher使用它查询USB磁盘驱动器，然后获取相应的单位字母，并仅返回根目录中包含名称的驱动器信息

使用LINQ查询表达式：

使用LINQ扩展方法：

使用foreach：

要使用ManagementObject，您需要添加对System.Management的引用

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我没有很好地测试它，因为现在我没有任何SD卡，但我希望它有帮助

我不完全确定，但我认为OP没有GUIDalso谢谢你的npit，但我关注的是Codropo的答案，很抱歉没有尝试你的。hi@Codropo，usbDrivesLetters返回所有可移动驱动器，包括SD卡。但是我喜欢ManagementObjectSearcher，它看起来更专业，哈哈，所以你能帮我一点忙吗？如何只过滤usb驱动器？@OhMyDog In Device manager，SD卡读卡器显示在哪个节点下？@OhMyDog您还可以告诉我从Win32\U DiskDrive中InterfaceType='USB'.Get.Cast.Selectf=>stringf[PNPDeviceID].ToList新ManagementObjectSearcherselect*的输出是什么吗？问题已解决。我检查了pnpDeviceID，发现USB闪存和SD卡之间存在差异，谢谢！在你现在知道怎么做之后，你能把你的答案编辑成正确的吗？谢谢

 Win32.DEV_BROADCAST_DEVICEINTERFACE deviceInterface;
 deviceInterface = (Win32.DEV_BROADCAST_DEVICEINTERFACE)
 string name = new string(deviceInterface.dbcc_name);
 Guid g = new Guid(deviceInterface.dbcc_classguid);
 if (g.ToString() == "a5dcbf10-6530-11d2-901f-00c04fb951ed")
 {*DO SOMETHING*}

static IEnumerable<DriveInfo> GetUsbDevices()
{
    IEnumerable<string> usbDrivesLetters = from drive in new ManagementObjectSearcher("select * from Win32_DiskDrive WHERE InterfaceType='USB'").Get().Cast<ManagementObject>()
                                           from o in drive.GetRelated("Win32_DiskPartition").Cast<ManagementObject>()
                                           from i in o.GetRelated("Win32_LogicalDisk").Cast<ManagementObject>()
                                           select string.Format("{0}\\", i["Name"]);

    return from drive in DriveInfo.GetDrives()
           where drive.DriveType == DriveType.Removable && usbDrivesLetters.Contains(drive.RootDirectory.Name)
           select drive;
}

static IEnumerable<DriveInfo> GetUsbDevices()
{
    IEnumerable<string> usbDrivesLetters = new ManagementObjectSearcher("select * from Win32_DiskDrive WHERE InterfaceType='USB'").Get().Cast<ManagementObject>()
        .SelectMany(drive => drive.GetRelated("Win32_DiskPartition").Cast<ManagementObject>())
        .SelectMany(o => o.GetRelated("Win32_LogicalDisk").Cast<ManagementObject>())
        .Select(i => Convert.ToString(i["Name"]) + "\\");

    return DriveInfo.GetDrives().Where(drive => drive.DriveType == DriveType.Removable && usbDrivesLetters.Contains(drive.RootDirectory.Name));
}

static IEnumerable<string> GetUsbDrivesLetters()
{                
    foreach (ManagementObject drive in new ManagementObjectSearcher("select * from Win32_DiskDrive WHERE InterfaceType='USB'").Get())
        foreach (ManagementObject o in drive.GetRelated("Win32_DiskPartition"))
            foreach (ManagementObject i in o.GetRelated("Win32_LogicalDisk"))
                yield return string.Format("{0}\\", i["Name"]);
}

static IEnumerable<DriveInfo> GetUsbDevices()
{
    IEnumerable<string> usbDrivesLetters = GetUsbDrivesLetters();
    foreach (DriveInfo drive in DriveInfo.GetDrives())
        if (drive.DriveType == DriveType.Removable && usbDrivesLetters.Contains(drive.RootDirectory.Name))
            yield return drive;
}