.net - 有没有更快的方法来获取卷序列号？

Question

您好，我正在使用此代码来生成机器签名。但执行起来需要相当长的时间。想知道为什么这么慢？有什么更快的方法推荐吗？

Public Shared Function DriveSN(ByVal DriveLetter As String) As String
    Dim disk As ManagementObject = New ManagementObject(String.Format("Win32_Logicaldisk='{0}'", DriveLetter))
    Dim VolumeName As String = disk.Properties("VolumeName").Value.ToString()
    Dim SerialNumber As String = disk.Properties("VolumeSerialnumber").Value.ToString()
    Return SerialNumber.Insert(4, "-")
End Function

Private Shared msig As String = Nothing

Public Shared Function MachineSignature() As String
    If msig Is Nothing Then
        Dim list As New List(Of String)
        For Each d As DriveInfo In DriveInfo.GetDrives()
            If (d.IsReady) Then
                list.Add(DriveSN(d.Name.Substring(0, 2)))
            End If
        Next
        msig = String.Join(" & ", list.ToArray())
    End If
    Return msig
End Function

Answer 1

egghead cafe 也有一种 .Net 方式使用 System.Management 命名空间。

首先，您需要在vb.net中添加对System.Management dll的引用。使用“项目”->“添加引用”菜单项。

然后以下代码获取C盘的驱动器序列号:

Dim drive As String = "C"
Dim disk As System.Management.ManagementObject = _
       New System.Management.ManagementObject _
       ("win32_logicaldisk.deviceid=""" + drive + ":""")
disk.Get()
Dim SerialNumber as String = disk("VolumeSerialNumber").ToString()