如何確定給定的驅動器號是本地，映射還是USB驅動器？

Question

鑒於驅動器的字母，我如何確定它是什么類型的驅動器？

例如，E：\\是USB驅動器，網絡驅動器還是本地硬盤驅動器。

Answer 1

看看DriveInfo的DriveType屬性。

System.IO.DriveInfo[] drives = System.IO.DriveInfo.GetDrives();
foreach (var drive in drives)
{
    string driveName = drive.Name; // C:\, E:\, etc:\

    System.IO.DriveType driveType = drive.DriveType;
    switch (driveType)
    {
        case System.IO.DriveType.CDRom:
            break;
        case System.IO.DriveType.Fixed:
            // Local Drive
            break;
        case System.IO.DriveType.Network:
            // Mapped Drive
            break;
        case System.IO.DriveType.NoRootDirectory:
            break;
        case System.IO.DriveType.Ram:
            break;
        case System.IO.DriveType.Removable:
            // Usually a USB Drive
            break;
        case System.IO.DriveType.Unknown:
            break;
    }
}

Answer 2

僅供其他人參考，這就是我將GenericTypeTea的答案轉化為：

/// <summary>
/// Gets the drive type of the given path.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>DriveType of path</returns>
public static DriveType GetPathDriveType(string path)
{
    //OK, so UNC paths aren't 'drives', but this is still handy
    if(path.StartsWith(@"\\")) return DriveType.Network;  
    var info = 
          DriveInfo.GetDrives()
          Where(i => path.StartsWith(i.Name, StringComparison.OrdinalIgnoreCase))
          FirstOrDefault();
    if(info == null) return DriveType.Unknown;
    return info.DriveType;
}

（您可能還需要注意AJBauer的答案 ： DriveInfo還會將USB HD列為DriveType.fixed ）

Answer 3

DriveInfo還會將USB HD列為DriveType.fixed，因此如果您需要知道驅動器的接口是否為USB，這無濟於事。 這是一個VB.NET函數，它返回所有外部USB驅動器號：

Imports System.Management

Public Shared Function GetExternalUSBDriveLettersCommaSeparated() As String
    Dim usbDrivesString As String = ""

    Dim wmiDiskDriveDeviceID As String = ""
    Dim wmiDiskDriveMediaType As String = ""
    Dim wmiDiskPartitionDeviceID As String = ""
    Dim wmiLogicalDiskDeviceID As String = ""

    Using wmiDiskDrives = New ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive WHERE InterfaceType='USB'")
        For Each wmiDiskDrive As ManagementObject In wmiDiskDrives.Get
            wmiDiskDriveDeviceID = wmiDiskDrive("DeviceID").ToString
            wmiDiskDriveMediaType = wmiDiskDrive("MediaType").ToString.ToLower
            If wmiDiskDriveMediaType.Contains("external") Then
                Using wmiDiskPartitions = New ManagementObjectSearcher("ASSOCIATORS OF {Win32_DiskDrive.DeviceID='" + wmiDiskDriveDeviceID + "'} WHERE AssocClass = Win32_DiskDriveToDiskPartition")
                    For Each wmiDiskPartition As ManagementObject In wmiDiskPartitions.Get
                        wmiDiskPartitionDeviceID = wmiDiskPartition("DeviceID").ToString
                        Using wmiLogicalDisks = New ManagementObjectSearcher("ASSOCIATORS OF {Win32_DiskPartition.DeviceID='" + wmiDiskPartitionDeviceID + "'} WHERE AssocClass = Win32_LogicalDiskToPartition")
                            For Each wmiLogicalDisk As ManagementObject In wmiLogicalDisks.Get
                                wmiLogicalDiskDeviceID = wmiLogicalDisk("DeviceID").ToString
                                If usbDrivesString = "" Then
                                    usbDrivesString = wmiLogicalDiskDeviceID
                                Else
                                    usbDrivesString += "," + wmiLogicalDiskDeviceID
                                End If
                            Next
                        End Using
                    Next
                End Using
            End If
        Next
    End Using

    Return usbDrivesString
End Function

請參閱此MSDN鏈接： WMI任務：磁盤和文件系統

Answer 4

看看DriveInfo和DriveType

Answer 5

DriveType 還將SUBSTed驅動器顯示為DriveType.Fixed 。

要檢查驅動器是否已被替換，我使用代碼如何確定目錄路徑是否為SUBST 。