C#四种计时器Timer的区别和用法

string state=”.”;
//state参数可以传入想在callback委托中处理的对象。可以传递一个AutoRestEvent，在回调函数中向主函数发送信号。
Timer timer=new Timer(TimeMethod,state,100,1000)//100表示多久后开始，1000表示隔多久执行一次。

void TimerMethod(object state)
{Console.Write(state.ToString());}

timer.Dispose();//取消timer执行

System.Timers.Timer timer = new System.Timers.Timer();
timer.Interval = 500;
timer.SynchronizingObject = this;

timer.Elapsed+=new System.Timers.ElapsedEventHandler(timer_Elapsed);

timer.Start(); private void timer_Elapsed(Object source, Timers.ElapsedEventArgs e)
{
    this.tbTimer.Text = value;
}

int inTimer = 0;
        void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            if (Interlocked.Exchange(ref inTimer, 1) == 0)
            {
                Thread.Sleep(3000);
                string currentThreadId = Thread.CurrentThread.ManagedThreadId.ToString();
                this.Dispatcher.BeginInvoke(new Action(() =>
                {
                    this.Label_Result.Content += currentThreadId + ",";
                }), null);
                Interlocked.Exchange(ref inTimer, 0);
            }
        }

using System.Windows.Forms;

public Form1()
{
    InitializeComponent();
    this.Load += delegate
    {
        Timer timer = new Timer();
        timer.Interval = 500;
        timer.Tick += delegate
        {
            System.Diagnostics.Debug.WriteLine($"Timer Thread: {System.Threading.Thread.CurrentThread.ManagedThreadId}");
            System.Diagnostics.Debug.WriteLine($"Is Thread Pool: {System.Threading.Thread.CurrentThread.IsThreadPoolThread}");
            this.lblTimer.Text = DateTime.Now.ToLongTimeString();
        };

        timer.Start();
        System.Diagnostics.Debug.WriteLine($"Main Thread: {System.Threading.Thread.CurrentThread.ManagedThreadId}");
    };
}