vb.net - 检测 exe 何时启动 vb.net

Question

有人知道如何让我的 VB.net 应用程序等到检测到进程正在运行吗？

我可以找到有关如何检测 exe 完成运行但没有检测到 exe 何时启动的示例？

Answer 1

您可以使用System.Management.ManagementEventWatcher等待某些 WMI 事件发生。你需要给它一个查询类型和条件，让它监视你的进程的下一次创建，然后让它在发生时做一些事情。

例如，如果你想：

Dim watcher As ManagementEventWatcher

Public Sub Main()
    Dim monitoredProcess = "Notepad.exe"
    Dim query As WqlEventQuery = New WqlEventQuery("__InstanceCreationEvent", new TimeSpan(0, 0, 1), "TargetInstance isa ""Win32_Process"" And TargetInstance.Name = """ & monitoredProcess & """")

    watcher = New ManagementEventWatcher()
    watcher.Query = query

    'This starts watching asynchronously, triggering EventArrived events every time a new event comes in.
    'You can do synchronous watching via the WaitForNextEvent() method
    watcher.Start()

End Sub

Private Sub Watcher_EventArrived(sender As Object, e As EventArrivedEventArgs) Handles watcher.EventArrived
    'Do stuff with the startup event
End Sub  

最终您需要停止观察者，您可以通过关闭应用程序或调用watcher.Stop(). 这是作为大脑编译器编写的，所以如果有任何问题，请告诉我。

Answer 2

您可以使用以下条件

返回 Process.GetProcesses().Any(Function(p) p.Name.Contains(myProcessName))

Answer 3

   Dim p() As Process

 Private Sub CheckIfRunning()
        p = Process.GetProcessesByName("processName")
        If p.Count > 0 Then
            ' Process is running
        Else
            ' Process is not running
        End If
    End Sub

或简单地

System.Diagnostics.Process.GetProcessesByName("processName")

Answer 4

您可以简单地等待并每隔一段时间检查一下该进程是否存在。用于Thread.Sleep避免忙于等待。

但是，如果它在您的等待时间内启动并存在，您可能会错过该过程。