Question

我有一个带有班级计时器的Windows服务。 Elapsed事件调用此Work方法：

protected override void Work()
    {
        if (!File.Exists(@"C:\Users\Will\Desktop\Developer stuff\junk text files\reusableservicetest.txt"))
            File.Create(@"C:\Users\Will\Desktop\Developer stuff\junk text files\reusableservicetest.txt");
        File.WriteAllLines(@"C:\Users\Will\Desktop\Developer stuff\junk text files\reusableservicetest.txt",
            new[] { DateTime.Now.ToLongTimeString() });
    }

正如您所看到的，它只是将日期时间写入txt文件。该服务安装并启动正常，但不会写日期时间。我有时间试图让这个poc工作。它应该是这里常用模式的抽象：在一定间隔内做一些工作。女士们，先生们，你们看到我出错的地方吗？这是基类：

using System;
using System.ServiceProcess;
using System.Timers;

namespace WF.EMC.AVP.CommonCore.Utilities
{
public abstract class PollingServiceBase : ServiceBase
{
    private readonly Timer _timer;
    private System.ComponentModel.IContainer components = null;
    private string _serviceName;

    protected PollingServiceBase(int pollingMinutes, string serviceName)
    {
        _serviceName = serviceName;
        var pollingInterval = new TimeSpan(0, 0, pollingMinutes, 0);
        _timer = new Timer(pollingInterval.TotalMilliseconds) {AutoReset = true};
        _timer.Elapsed += timer_Elapsed;
    }

    void timer_Elapsed(object sender, ElapsedEventArgs e)
    {
        Work();
    }

     protected override void OnStart(string[] args)
    {
        _timer.Start();
    }

     protected override void OnStop()
     {
         _timer.Stop();
     }

        protected abstract void Work();

        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }


        /// <summary> 
        /// Required method for Designer support - do not modify 
        /// the contents of this method with the code editor.
        /// </summary>
        public void InitializeComponent()
        {
            components = new System.ComponentModel.Container();
            this.ServiceName = _serviceName;
        }

}
}

在这里我们有了孩子：

namespace TestService7
{

public partial class Service1 : PollingServiceBase
{
    public Service1(int pollingMinutes = 1, string serviceName = "TestService7")
        : base(pollingMinutes, serviceName)
    {
        InitializeComponent();
    }

    protected override void OnStart(string[] args)
    {
    }

    protected override void OnStop()
    {
    }

    protected override void Work()
    {
        if (!File.Exists(@"C:\Users\Will\Desktop\Developer stuff\junk text files\reusableservicetest.txt"))
            File.Create(@"C:\Users\Will\Desktop\Developer stuff\junk text files\reusableservicetest.txt");
        File.WriteAllLines(@"C:\Users\Will\Desktop\Developer stuff\junk text files\reusableservicetest.txt",
            new[] { DateTime.Now.ToLongTimeString() });
    }
}
}

Answer 1

您使用空方法覆盖OnStart。所以你的计时器将无法启动。

为什么赢得我的计时器事件启动？

1 个答案: