C#使用System.Threading.Timer实现计时器的示例详解

using System;
using System.Threading;
using System.Threading.Tasks;
 
class Program
{
    private static Timer timer;
 
    static void Main(string[] args)
    {
        var dueTime = 1000;  // 首次执行延迟时间
        var interval = 2000; // 后续执行间隔时间
        var timerState = new TimerState { Counter = 0 };
 
        timer = new Timer(
            callback: new TimerCallback(TimerTask),
            state: timerState,
            dueTime: dueTime,
            period: interval);
 
        Console.WriteLine($"{DateTime.Now:yyyy-MM-dd:HH:mm:ss.fff}: 准备开始执行...");
        while (timerState.Counter <= 10)
        {
            Task.Delay(1000).Wait();
        }
 
        timer.Dispose();
        Console.WriteLine($"{DateTime.Now:yyyy-MM-dd:HH:mm:ss.fff}: 完成.");
    }
 
    private static void TimerTask(object timerState)
    {
        Console.WriteLine($"{DateTime.Now:yyyy-MM-dd:HH:mm:ss.fff}: 触发了一次新的回调.");
        var state = timerState as TimerState;
        Interlocked.Increment(ref state.Counter);
    }
 
    class TimerState
    {
        // 计数器
        public int Counter;
    }
}