我的程序已停止响应WMI事件

问题描述

让我告诉你我的问题...
我已经编写了一个可以响应WMI事件的程序
我运行它，每件事都很酷... :)
但是后来，当我尝试时，尽管事件已发生，但我的程序仍停止响应该事件
而且我从未对代码进行任何修改...
你能帮我吗?...请:sigh:
这是我的代码，从"A"到"Z" :(我向项目添加了System.management引用)

Let me tell you about my problem...
I have made a program that react with WMI Events
I run it and every thing work cool... :)
but later, when I try it ,my program stopped to react with the event although the Event has occured
and I never made any modification to the code...
can you help me....please :sigh:
this is my code from ''A'' to ''Z'' :(I have Added System.management refrence to my project)

Imports System.Management
Public Class Form1
    Dim WithEvents watcher As New ManagementEventWatcher("Select * from Win32_ComputerShutdownEvent Within 1")
    Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        watcher.Stop()
        watcher.Dispose()
    End Sub
    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        watcher.Start()
    End Sub
    Private Sub watcher_EventArrived(ByVal sender As Object, ByVal e As System.Management.EventArrivedEventArgs) Handles watcher.EventArrived
        MessageBox.Show("Good buy")
    End Sub
End Class

我的操作系统:Windows Xp SP3

my os: Windows Xp SP3

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