C#タイマータイマーアプリケーション

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Timers;
using System.Runtime.InteropServices;
using System.Threading;

namespace Timer001
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
           
        }
        //实例化Timer类
        System.Timers.Timer aTimer = new System.Timers.Timer();      

        private void button1_Click(object sender, EventArgs e)
        {
            this.SetTimerParam();
        }

        private void test(object source, System.Timers.ElapsedEventArgs e)
        {     
            MessageBox.Show(DateTime.Now.ToString());           
        }

        public void SetTimerParam()
        {
            //到时间的时候执行事件
            aTimer.Elapsed += new ElapsedEventHandler(test);
            aTimer.Interval = 1000;
            aTimer.AutoReset = true;//执行一次 false，一直执行true
            //是否执行System.Timers.Timer.Elapsed事件
            aTimer.Enabled = true;
        }
    }
}