C#定时器中的System.Timers.Timer详解

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Timers;
using Timer = System.Timers.Timer;
namespace ConsoleTest
{
    internal class Program
    {
        private static Timer backgroundTimer;
        private static int taskCounter = 0;
        private static bool isRunning = false;
        static void Main(string[] args)
        {
            Console.WriteLine("System.Timers.Timer 使用案例");
            Console.WriteLine("============================");
            // 创建定时器，每3秒执行一次
            backgroundTimer = new Timer(3000);
            backgroundTimer.Elapsed += OnTimerElapsed;
            backgroundTimer.AutoReset = true;
            // 启动定时器
            backgroundTimer.Enabled = true;
            isRunning = true;
            Console.WriteLine("定时器已启动，每3秒执行一次后台任务");
            Console.WriteLine("输入 'stop' 停止定时器，输入 'exit' 退出程序");
            while (true)
            {
                string input = Console.ReadLine();
                if (input?.ToLower() == "stop")
                {
                    StopTimer();
                }
                else if (input?.ToLower() == "exit")
                {
                    break;
                }
            }
            // 清理资源
            StopTimer();
            backgroundTimer.Dispose();
            Console.WriteLine("程序结束");
        }
        private static void OnTimerElapsed(object source, ElapsedEventArgs e)
        {
            taskCounter++;
            Console.WriteLine($"[后台任务 {taskCounter}] 执行时间: {e.SignalTime:yyyy-MM-dd HH:mm:ss}");
            // 模拟一些后台工作
            PerformBackgroundWork();
        }
        private static void PerformBackgroundWork()
        {
            try
            {
                // 模拟耗时操作
                Thread.Sleep(1000);
                Console.WriteLine($"[后台任务 {taskCounter}] 工作完成");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"[错误] 后台任务执行出错: {ex.Message}");
            }
        }
        private static void StopTimer()
        {
            if (isRunning)
            {
                backgroundTimer.Enabled = false;
                isRunning = false;
                Console.WriteLine("定时器已停止");
            }
        }
    }
}