C# 简单的定时器 示例代码

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
//add by kj
//using System.Collections;


namespace 定时器
{   
    
    public partial class Form1 : Form
    {
        

        public Form1()
        {
            InitializeComponent();
        }

        
        // 单选框
        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton1.Checked == true)
            {
                button2.Enabled = false;
                numericUpDown1.Enabled = false;
                numericUpDown2.Enabled = false;
                button1.Enabled = true;
                ndhour.Enabled = true;
                ndminute.Enabled = true;
            }  
                
        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton2.Checked == true)
            {
                button1.Enabled = false;
                ndhour.Enabled = false;
                ndminute.Enabled = false;
                button2.Enabled = true;
                numericUpDown1.Enabled = true;
                numericUpDown2.Enabled = true;
            }
        }
        
        
        
        
        
        
        
        private System.DateTime dtDes;
        private System.DateTime dtDes2;
        private void timer1_Tick(object sender, System.EventArgs e)
        { 
            if(DateTime.Now>dtDes)
            {
            timer1.Enabled=false;
               // this.Show();
               // this.textBox1.Text = "该吃饭了";
               // this.Activate();
                MessageBox.Show("不要玩了，时间到了，吃饭去吧", "吃饭喽");
            
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            timer2.Enabled = false;//屏蔽定时器2
            dtDes = new DateTime(DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day, (int)ndhour.Value, (int)ndminute.Value, 0, 0);
            timer1.Enabled = true;
            this.Hide();
        }
       
        
        
        private void timer2_Tick(object sender, System.EventArgs e)
        {
            if (DateTime.Now > dtDes2)
            {
                timer2.Enabled = false;
                // this.Show();
                // this.textBox1.Text = "该吃饭了";
                // this.Activate();
                MessageBox.Show("不要玩了，时间到了，吃饭去吧", "吃饭喽");

            }
        }
        private void button2_Click(object sender, EventArgs e)
        {/***/
            int minute_tmp = (int)numericUpDown1.Value   DateTime.Today.Minute;
            int sec_tmp = (int)numericUpDown2.Value   DateTime.Today.Second;

            timer1.Enabled = false;
            dtDes2 = new DateTime(DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day, DateTime.Today.Hour, minute_tmp, sec_tmp, 0);
            timer2.Enabled = true;
            this.Hide();
        
        }

      

  











    }
}