WinForms多线程编程之摇奖程序

利用多线程模拟一个电脑摇奖程序，如图所示。在点击【滚动号码】，启动线程，对后台的电话号码进行循环显示；点击【开奖】按钮，关闭线程，此时显示在文本框中的电话号码即为中奖号码

 

 

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 Ex02_Lottery
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        //定义一个泛型
        List<string> liNum = new List<string>();

        //定义一个全局变量
        Thread thread;

        private void btnRoll_Click(object sender, EventArgs e)
        {
            //定义一个线程
            thread =  new Thread(new ThreadStart(Num));

            //开启线程
            thread.Start();

            btnRoll.Enabled = false;

        }
        public void Num()
        {
            int i = 0;
           
            liNum.Add("13965113141");
            liNum.Add("18676768761");
            liNum.Add("13456468141");
            liNum.Add("15456564541");
            liNum.Add("13965113141");
            liNum.Add("13968766141");
            liNum.Add("13965113141");
            liNum.Add("13123113311");

            //循环
            while (i < liNum.Count + 1)
            {
                if (i >= liNum.Count) i = 0;

                txtNum.Text = liNum[i].ToString();

                i++;
            }

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            txtNum.Enabled = false;
            //线程间操作无效: 从不是创建控件“ btnRoll”的线程访问它。解决方法
            Form1.CheckForIllegalCrossThreadCalls = false;
        }

        private void btnLottery_Click(object sender, EventArgs e)
        {
            //挂想线程
            thread.Suspend();

            //恢复线程
            thread.Resume();

            //关闭线程
            thread.Abort();

            btnLottery.Enabled = false;

            MessageBox.Show("号码为:" + txtNum.Text + "恭喜你中奖了","信息提示");
        }
    }
}