form1.cs

Visual C#2005程序设计教程

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WinApp10_9结束程序
{
    public partial class Form1 : Form
    {
        int endTime = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "按钮Ctrl+Alt+F8结束程序";
            label1.Text = "";
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (endTime == 5)
                this.Close();
            endTime++;
            label1.Text = "正在结束程序……" + endTime;
        }

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.F8 && (e.Control && e.Alt))
            {
                timer1.Enabled = true;
            }
        }
    }
}