C#多线程-UI线程与工作线程<1>

前些日子,看了网上几个例子,总结一下:

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;
//using System.Windows.Forms.Application;

namespace UIWorkTask
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        Thread uiThread=null;//UI线程
        Thread wkThread = null;//工作线程
        private void Form1_Load(object sender, EventArgs e)
        {
           
        }
        public void UpdateProgressThread() {//UI线程的具体操作,此处给一个进度条
            int i;
            for (i = 0; i < 100; i++) {
                Thread.Sleep(100);
                this.Invoke(new Action<int>(this.UpdateProgress), i);//UI设置是不能直接在线程中进行的,必须使用代理
            }
        }
        public void UpdateProgress(int i) {//更新UI设置的具体实现
            this.progressBar1.Value = i;
        }
        public void work() {//工作线程
            Thread.Sleep(2000);
            uiThread.Suspend();
            Thread.Sleep(2000);
            uiThread.Resume();
            MessageBox.Show("work thread is working ...");
        }

        private void button1_Click(object sender, EventArgs e)//添加一个按钮,点击按钮开始两个线程工作
        {
            uiThread = new Thread(new ThreadStart(UpdateProgressThread));
            uiThread.Start();
            wkThread = new Thread(new ThreadStart(work));
            wkThread.Start();
        }
    }
}

运行即可.

这个程序不具有实际应用,因为程序的UI更新往往和工作进展相关联,即UI线程和work线程需要互相通知对方,即两个线程之间有信息传递.