Question

我的代码如下所示。当我点击按钮时，它应该查看服务然后确定它需要做什么。但是，当它获取部件以检查它是否已停止时，它会收到错误，因为它尝试启动它，即使它已经启动了。我不知道为什么它试图启动服务，即使它应该返回假的停止。

任何帮助都将不胜感激。

    Dim sc As New System.ServiceProcess.ServiceController("LPT:One Job Queue Engine")

    'This sets the Machine Name/IP Address
    'Removed machine name.
    sc.MachineName = "**********"
    'This tells the service to stop
    If sc.Status = ServiceProcess.ServiceControllerStatus.Running Then
        sc.Stop()
        'This tells the program to wait until the service is stopped
        sc.WaitForStatus(ServiceProcess.ServiceControllerStatus.Stopped)
        'This starts the service once it has stopped
        sc.Start()
    End If

    'Here is where the problem is!
    **If sc.Status.Equals(System.ServiceProcess.ServiceControllerStatus.Stopped) Then
        sc.Start()
    End If**

    If sc.Status = ServiceProcess.ServiceControllerStatus.StopPending Then
        sc.ExecuteCommand("taskkill /F /IM lptjqe.exe")
        sc.Start()
    End If

Answer 1

嗯，这就是我为解决这个问题所采取的措施。

我没有使用两个不同的if语句，而是将它组合成一个。

    If sc.Status = ServiceProcess.ServiceControllerStatus.Running Then
        sc.Stop()
        'This tells the program to wait until the service is stopped
        sc.WaitForStatus(ServiceProcess.ServiceControllerStatus.Stopped)
        'This starts the service once it has stopped
        sc.Start()
    ElseIf sc.Status = System.ServiceProcess.ServiceControllerStatus.Stopped Then
        sc.Start()
    End If

享受！

VB.Net System.ServiceProcess尝试检查服务时出错

1 个答案: