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("============================");
            // 創(chuàng)建定時(shí)器，每3秒執(zhí)行一次
            backgroundTimer = new Timer(3000);
            backgroundTimer.Elapsed += OnTimerElapsed;
            backgroundTimer.AutoReset = true;
            // 啟動(dòng)定時(shí)器
            backgroundTimer.Enabled = true;
            isRunning = true;
            Console.WriteLine("定時(shí)器已啟動(dòng)，每3秒執(zhí)行一次后臺(tái)任務(wù)");
            Console.WriteLine("輸入 'stop' 停止定時(shí)器，輸入 'exit' 退出程序");
            while (true)
            {
                string input = Console.ReadLine();
                if (input?.ToLower() == "stop")
                {
                    StopTimer();
                }
                else if (input?.ToLower() == "exit")
                {
                    break;
                }
            }
            // 清理資源
            StopTimer();
            backgroundTimer.Dispose();
            Console.WriteLine("程序結(jié)束");
        }
        private static void OnTimerElapsed(object source, ElapsedEventArgs e)
        {
            taskCounter++;
            Console.WriteLine($"[后臺(tái)任務(wù) {taskCounter}] 執(zhí)行時(shí)間: {e.SignalTime:yyyy-MM-dd HH:mm:ss}");
            // 模擬一些后臺(tái)工作
            PerformBackgroundWork();
        }
        private static void PerformBackgroundWork()
        {
            try
            {
                // 模擬耗時(shí)操作
                Thread.Sleep(1000);
                Console.WriteLine($"[后臺(tái)任務(wù) {taskCounter}] 工作完成");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"[錯(cuò)誤] 后臺(tái)任務(wù)執(zhí)行出錯(cuò): {ex.Message}");
            }
        }
        private static void StopTimer()
        {
            if (isRunning)
            {
                backgroundTimer.Enabled = false;
                isRunning = false;
                Console.WriteLine("定時(shí)器已停止");
            }
        }
    }
}