启动后立即停止 Windows 服务

Question

I Wrote a windows service, you can find code below

    static void Main()
    {
        ServiceBase[] ServicesToRun;
        ServicesToRun = new ServiceBase[] 
        { 
            new AutoUpgradeServiceDemo()
        };
        ServiceBase.Run(ServicesToRun);

    }

//Service class
    public AutoUpgradeServiceDemo()
    {
        InitializeComponent();
    }

    protected override void OnStart(string[] args)
    {
        MessageBox.Show("Service Has been Started");
        //My logic goes here
    }

    protected override void OnStop()
    {
        //My logic goes here
        MessageBox.Show("Service Has been Stopped");
    }

after installing, i started it by manually. It is immediately closing showing following error.

Could anyone help me...

Answer 1

Windows services have no user interface. So you cannot show a message box from a service. If you want to report errors, the standard way is using event log.

protected override void OnStart(string[] args)
{
    base.OnStart(args);
    //my stuff
    this.WriteEventLogEntry("My service started successfully", System.Diagnostics.EventLogEntryType.Information);
}

Answer 2

Windows service must execute OnStart() in limited time, or is killed. How many seconds? I don't remember, look in MSDN. When service is killed in this scenario, not too much info is reported, maybe Your is killed by watchdog too?

If longer start-up is required I usually start new thread

  protected override void OnStart(string[] args)
        {

            MyXxxxxStarter.LogInfo("Try to start thread");

            worker = new Thread(WorkerThread);
            worker.Start();

            MyXxxxxStarter.LogInfo("Thread started ");

        }

I agree with TSungur, logging only by event log (in my code implemented in one place)