WMI - Windows Management Instrumentation，是基于 Web Based Enterprise Management（WBEM）的面向对象数据库，一个管理企业环境开发的标准接口。可以利用它访问本地主机的一些信息和服务、监视计算机、管理远程计算机…
在VS.NET中需要添加引用：System.Management.dll,这样你的项目才能使用WMI。
WMI 的使用灵活，但 class 也多，如：CPU的系列号－Win32_Processor、主板BIOS的系列号－Win32_BIOS、本地磁盘－Win32_LogicalDisk、共享资源－Win32_share等等，详细的 WMI 类名可以在MSDN中查询 ms-help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.2052/wmisdk/wmi/win32_classes.htm
也可以使用WMI Tools管理WMI服务的名称空间http://www.microsoft.com/downloads/details.aspx?FamilyId=6430F853-1120-48DB-8CC5-F2ABDC3ED314&displaylang=en
用这个程序也可以获取WMI Class Name：
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Dim WMI As Management.ManagementClass
Dim info As Management.ManagementObject
‘ 返回 WMI 的 Class Name 到 String Array
Private Function FindWMI(ByVal IndexString As String, ByVal Deep As Boolean) As String()
Try
Dim _WMIList() As String
WMI = New Management.ManagementClass
Dim options As New Management.EnumerationOptions
Dim chClass As String = Nothing
If Not IndexString Is Nothing Then
chClass = IndexString
End If
options.EnumerateDeep = Deep
For Each info In WMI.GetSubclasses(options)
If _WMIList Is Nothing Then
ReDim _WMIList(0)
Else
ReDim Preserve _WMIList(UBound(_WMIList) + 1)
End If
If chClass Is Nothing Then
_WMIList(UBound(_WMIList)) = (info.Item("__Class"))
Else
If info.Item("__Class").ToString.Substring(0, _
IIf(info.Item("__Class").ToString.Length > chClass.Length, _
chClass.Length, info.Item("__Class").ToString.Length)).ToLower = chClass Then
_WMIList(UBound(_WMIList)) = (info.Item("__Class"))
End If
End If
Application.DoEvents()
Next
options = Nothing
info = Nothing
WMI = Nothing
Return _WMIList
Catch ex As Exception
MsgBox(ex.Message, 16 + 0, ex.TargetSite.Name)
End Try
End Function
‘获取 WMI 的 Class Info 并将其写入输出窗口
Private Sub GetInfo(ByVal IndexString As String)
Try
If IndexString Is Nothing Then Exit Sub
Dim wmiClass As String = IndexString
WMI = New Management.ManagementClass(wmiClass)
Dim strInfo As String
Console.WriteLine("WMI Class is:" & wmiClass)
For Each info In WMI.GetInstances
‘将 WMI Class Info 写到输出窗口
Console.WriteLine(info.GetText(Management.TextFormat.Mof).ToString)
Next
info = Nothing
WMI = Nothing
Catch ex As Exception
MsgBox(ex.Message, 16 + 0, ex.TargetSite.Name)
End Try
End Sub
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使用时：
Dim tmpStr() As String, i As Integer
'获取 WMI 的 Class Name
tmpStr = FindWMI(Nothing, True)
'列出 Class Name Array 中的第 559 个 Class 的 Info
GetInfo(tmpStr(559))
'列出物理内存的信息
GetInfo("Win32_PhysicalMemory")
