多线程

【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.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;//有线程这个很重要

namespace 多线程
{
    public partial class Form1 : Form
    { //声明3个线程
        Thread th1;
        Thread th2;
        Thread th3;
     
        public Form1()
        {
            InitializeComponent();
        }
       




        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            th1 = new Thread(new ThreadStart(Run1)); //固定写法
            th2 = new Thread(new ThreadStart(Run2));
            th3 = new Thread(new ThreadStart(Run3));

            th1.Priority = ThreadPriority.Highest; //设置优先级
            th2.Priority = ThreadPriority.AboveNormal;
            th3.Priority = ThreadPriority.Normal;


            th1.Start(); //启动线程.要每次启动线程？
            th2.Start();
            th3.Start();

            //下面这句代码，解决：线程间操作无效: 从不是创建控件
            Control.CheckForIllegalCrossThreadCalls = false;
        }
        private void Run1()
        {

            for (bool i = false; i == false; )//这样可以一直运行
            {
                string dt0 = textBox2.Text.ToString();

                dt0 = dt0   "1";

                textBox1.Text = dt0;
                // Thread.Sleep(1);//相当于扫苗时间
            }
        }

        private void Run2()
        {
            for (int i = 0; i < 50; i  )
            {

                textBox2.Text = i.ToString();
                Thread.Sleep(100);
            }
        }

        private void Run3()
        {
            for (int i = 0; i < 50; i  )
            {

                textBox3.Text = i.ToString();
                Thread.Sleep(100);
            }
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            //退出界面，关闭线程
            th1.Abort();
            th2.Abort();
            th3.Abort();
        }

    }
}