C#中的三种定时计时器Timer用法介绍

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;

namespace TimerDemo
{
    public partial class FrmMain : Form
    {
        //定义全局变量
        public int currentCount = 0;
        public FrmMain()
        {
            InitializeComponent();
        }

        private void FrmMain_Load(object sender, EventArgs e)
        {
            //设置Timer控件可用
            this.timer.Enabled = true;
            //设置时间间隔（毫秒为单位）
            this.timer.Interval = 1000;
        }

        private void timer_Tick(object sender, EventArgs e)
        {
            currentCount += 1;
            this.txt_Count.Text = currentCount.ToString().Trim();
        }

        private void btn_Start_Click(object sender, EventArgs e)
        {
            //开始计时
            this.timer.Start();
        }

        private void btn_Stop_Click(object sender, EventArgs e)
        {
            //停止计时
            this.timer.Stop();
        }
    }
}

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;

namespace TimersTimer
{
    public partial class FrmMain : Form
    {
        //定义全局变量
        public int currentCount = 0;
        //定义Timer类
        System.Timers.Timer timer;
        //定义委托
        public delegate void SetControlValue(string value);

        public FrmMain()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            InitTimer();
        }

        /// <summary>
        /// 初始化Timer控件
        /// </summary>
        private void InitTimer()
        {
            //设置定时间隔(毫秒为单位)
            int interval = 1000;
            timer = new System.Timers.Timer(interval);
            //设置执行一次（false）还是一直执行(true)
            timer.AutoReset = true;
            //设置是否执行System.Timers.Timer.Elapsed事件
            timer.Enabled = true;
            //绑定Elapsed事件
            timer.Elapsed += new System.Timers.ElapsedEventHandler(TimerUp);
        }

        /// <summary>
        /// Timer类执行定时到点事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void TimerUp(object sender, System.Timers.ElapsedEventArgs e)
        {
            try
            {
                currentCount += 1;
                this.Invoke(new SetControlValue(SetTextBoxText),currentCount.ToString());
            }
            catch (Exception ex)
            {
                MessageBox.Show("执行定时到点事件失败:" + ex.Message);
            }
        }

        /// <summary>
        /// 设置文本框的值
        /// </summary>
        /// <param name="strValue"></param>
        private void SetTextBoxText(string strValue)
        {
            this.txt_Count.Text = this.currentCount.ToString().Trim();
        }

        private void btn_Start_Click(object sender, EventArgs e)
        {
            timer.Start();
        }

        private void btn_Stop_Click(object sender, EventArgs e)
        {
            timer.Stop();
        }
    }
}

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.Threading;

namespace Threading.Timer
{
    public partial class FrmMain : Form
    {
        //定义全局变量
        public int currentCount = 0;
        //定义Timer类
        System.Threading.Timer threadTimer;
        //定义委托
        public delegate void SetControlValue(object value);

        public FrmMain()
        {
            InitializeComponent();
        }

        private void FrmMain_Load(object sender, EventArgs e)
        {
            InitTimer();
        }

        /// <summary>
        /// 初始化Timer类
        /// </summary>
        private void InitTimer()
        {
            threadTimer = new System.Threading.Timer(new TimerCallback(TimerUp), null, Timeout.Infinite, 1000);
        }

        /// <summary>
        /// 定时到点执行的事件
        /// </summary>
        /// <param name="value"></param>
        private void TimerUp(object value)
        {
            currentCount += 1;
            this.Invoke(new SetControlValue(SetTextBoxValue), currentCount);
        }

        /// <summary>
        /// 给文本框赋值
        /// </summary>
        /// <param name="value"></param>
        private void SetTextBoxValue(object value)
        {
            this.txt_Count.Text = value.ToString();
        }

        /// <summary>
        /// 开始
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btn_Start_Click(object sender, EventArgs e)
        {
            //立即开始计时，时间间隔1000毫秒
            threadTimer.Change(0, 1000);
        }

        /// <summary>
        /// 停止
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btn_Stop_Click(object sender, EventArgs e)
        {
            //停止计时
            threadTimer.Change(Timeout.Infinite, 1000);
        }
    }
}