Windows服务运行在指定的时间函数 [英] Windows Service to run a function at specified time

问题描述

我想开始一个Windows服务在特定时间运行的日常功能。

I wanted to start a Windows service to run a function everyday at specific time.

用什么方法，我应该考虑实现这个？定时器或使用线程？

What method i should consider to implement this? Timer or using threads?

推荐答案

（1）第一次启动时，设置_timer.Interval以毫秒为单位的服务开始之间的用量并安排一个时间。此示例设置计划时间上午7:00为_scheduleTime = DateTime.Today.AddDays（1）.AddHours（7）;

(1) On first start, Set _timer.Interval to the amount of milliseconds between the service start and schedule time. This sample set schedule time to 7:00 a.m. as _scheduleTime = DateTime.Today.AddDays(1).AddHours(7);

（2）在Timer_Elapsed，复位_timer.Interval至24小时（以毫秒为单位）如当前间隔不是24小时。

(2) On Timer_Elapsed, reset _timer.Interval to 24 hours (in milliseconds) if current interval is not 24 hours.

System.Timers.Timer _timer;
DateTime _scheduleTime; 

public WinService()
{
    InitializeComponent();
    _timer = new System.Timers.Timer();
    _scheduleTime = DateTime.Today.AddDays(1).AddHours(7); // Schedule to run once a day at 7:00 a.m.
}

protected override void OnStart(string[] args)
{           
    // For first time, set amount of seconds between current time and schedule time
    _timer.Enabled = true;
    _timer.Interval = _scheduleTime.Subtract(DateTime.Now).TotalSeconds * 1000;                                          
    _timer.Elapsed += new System.Timers.ElapsedEventHandler(Timer_Elapsed);
}

protected void Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
    // 1. Process Schedule Task
    // ----------------------------------
    // Add code to Process your task here
    // ----------------------------------


    // 2. If tick for the first time, reset next run to every 24 hours
    if (_timer.Interval != 24 * 60 * 60 * 1000)
    {
        _timer.Interval = 24 * 60 * 60 * 1000;
    }  
}

这篇关于Windows服务运行在指定的时间函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！