多线程初探

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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
多线程

{

    public
partial class ThreadFrm : Form

    {

        public
ThreadFrm()

        {

            InitializeComponent();

            //强制CLR以安全方式执行线程

            TextBox.CheckForIllegalCrossThreadCalls = true;

            //实例化委托

            countDelegate = new
CountDelegate(ShowNum);

        }

        private
void btnCount_Click(object
sender, EventArgs e)

        {

            thread = new
Thread(Count);

            thread.Start();

        }

        //声明委托用于以安全方式与UI线程进行通信

        public
delegate void CountDelegate(string
message);

        //定义委托对象,在构造函数中实例化

        CountDelegate countDelegate = null;

        Thread thread = null;

        /// <summary>

        /// 执行计算

        /// </summary>

        private
void Count()

        {

            for
(int
i = 1; i < 9999; i++)

            {

                //重点,使用Control类的Invoke方法回调方法

                this.Invoke(countDelegate,i.ToString());

            }

            MessageBox.Show("计算完毕!");

        }

        /// <summary>

        /// 为UI线程中的TextBox赋值

        /// </summary>

        /// <param name="message"></param>

        private
void ShowNum(string
message)

        {

            ShowNumTxt.Text = message;

        }

        private
void ThreadFrm_FormClosing(object
sender, FormClosingEventArgs e)

        {

        }    

    }

}