几个 WMI 的例子（初级） - 4

读取日志记录：Imports SystemImports System.Management Module Module1 Public Sub Main() Dim strComputer = "magicdog" Dim wbemServices, wbemObjectSet, wbemObject wbemServices = GetObject("winmgmts:/" & strComputer) wbemObjectSet = wbemServices.InstancesOf("Win32_NTLogEvent") For Each wbemObject In wbemObjectSet Console.WriteLine("日志文件：" & wbemObject.LogFile) Console.WriteLine("记录号：" & wbemObject.RecordNumber) Console.WriteLine("类型：" & wbemObject.Type) Console.WriteLine("产生时间：" & wbemObject.TimeGenerated) Console.WriteLine("源名称：" & wbemObject.SourceName) Console.WriteLine("事件代码：" & wbemObject.EventCode) Console.WriteLine("用户" & wbemObject.User) Console.WriteLine("计算机名：" & wbemObject.ComputerName) Console.WriteLine("信息：" & wbemObject.Message) Next End SubEnd Module ---------------------------------------------------------------------------------------删除日志文件：（请先备份）Imports SystemImports System.Management Module Module1 Public Sub Main() Dim strComputer = "." Dim objWMIService, objLogFiles, objLogFile, logs, mylogs(3) objWMIService = GetObject("winmgmts:{impersonationLevel=impersonate,（Backup）}!/" & strComputer & "ootcimv2") mylogs(1) = "application" mylogs(2) = "system" mylogs(3) = "security" For Each logs In mylogs objLogFiles = objWMIService.ExecQuery("Select * from Win32_NTEventLogFile where LogFileName='" & logs & "'") For Each objLogFile In objLogFiles objLogFile.ClearEventLog() Next Next End SubEnd Module ---------------------------------------------------------------------------------------使用性能计数器：Imports SystemImports System.Management Module Module1 Public Sub Main() Dim strComputer As String = ".", i, intValue As Integer Dim colItems, objWMIService, objItem objWMIService = GetObject("winmgmts:/" & strComputer & "ootcimv2") For i = 1 To 5 Threading.Thread.Sleep(1000) colItems = objWMIService.ExecQuery("Select * From Win32_PerfRawData_PerfProc_Process Where Name = 'devenv'") For Each objItem In colItems intValue = objItem.HandleCount Console.WriteLine("打开的句柄数 ：" & intValue) Next Next End SubEnd Module 使用Getobject函数创建对象多用于脚本中，所以参数为WMI脚本库的标记名"winmgmts:"和目标电脑名，上述的strComputer="."相当于localhost，若在远程计算机上执行则需将”.”改这相应的计算机名。 其中：ManagementObject：单个管理对象ManagementClass：单个管理类ManagementObjectSearcher：查询管理对象及管理类的集合ManagementEventWatcher：监视来自 WMI 的事件ManagementQuery：用作所有查询类的基础。 也可以从脚本中创建：Set oLocator = CreateObject("WbemScripting.SWbemLocator") ' New SWbemLocator
If Err.Number <> 0 Then
MsgBox "Windows Management (WMI) 不能被创建” & Err.Description
WScript.Quit(0)
End If-----------------------------------------------------------------------set locator = createobject("WbemScripting.SwbemLocator")
set server = locator.ConnectServer ("/192.168.0.1ootcimv2","username","password")
set p_obj = server.execquery("select * form Win32_operatingsystem")
for each p_objswbem in p_obj
p_objswbem.reboot ‘从新启动
next WMI 的有关概述请参考 MSDN 或 http://www.csdn.net/develop/Article/19/19157.shtm