C#多线程(入门级实例源码)

【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.Text;
using System.Windows.Forms;
using System.Threading;

namespace MultiThreading
{
    /// <summary>
    /// 此实例：为SDP软件快速开发平台中使用到的真实方法
    /// </summary>
    public partial class Form1 : Form
    {
        /// <summary>
        /// 私有：线程同步信号
        /// </summary>
        private ManualResetEvent cmdWaiter;

        /// <summary>
        /// 委托更新进度条
        /// </summary>
        private delegate void updateBar();

        /// <summary>
        /// 结束提示委托
        /// </summary>
        private delegate void showEnd();

        /// <summary>
        /// 任务队列
        /// 注意：此任务队列 需要用户自动来定义 
        /// 实例中采用 string 来处理
        /// </summary>
        private List<string> taskList = new List<string>();

        /// <summary>
        /// 构造函数
        /// </summary>
        public Form1()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 页面初始化加载
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Form1_Load(object sender, EventArgs e)
        {

            // 阻塞当前线程
            cmdWaiter = new ManualResetEvent(false);

            // 启动线程池
            ThreadPool.QueueUserWorkItem(new WaitCallback(this.On_ThreadEvent));

        }

        /// <summary>
        /// 线程处理事务
        /// </summary>
        /// <param name="obj"></param>
        private void On_ThreadEvent(object obj)
        {
            while (true)
            {
                try
                {
                    // 阻塞当前线程，等待解除指令
                    this.cmdWaiter.WaitOne();

                    // 执行我们需要处理的事务
                    for (int k = 0; k < taskList.Count; k  )
                    {
                        Run_MyBusiness(taskList[k]);

                        // 休息指定的毫秒
                        Thread.Sleep(50);
                    }


                    // 清除队列数据
                    this.taskList.Clear();

                    this.On_EndLog();
                    this.cmdWaiter.Reset();
                }
                catch (Exception e)
                {
                    string strError = e.Message.ToString();
                    this.taskList.Clear();
                    this.cmdWaiter.Reset();
                }
            }
        }

        /// <summary>
        /// 执行我们自己的业务
        /// </summary>
        /// <param name="str"></param>
        private void Run_MyBusiness(string str)
        {
            // 委托更新
            updateBar updateDelegate = new updateBar(On_Update);
            this.Invoke(updateDelegate);
        }

        /// <summary>
        /// 开始按钮
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btn_Start_Click(object sender, EventArgs e)
        {

            this.taskList = new List<string>();
            for (int i = 1; i < 1001; i  )
            {
                this.taskList.Add(i.ToString());
            }


            this.txt_log.Text = "开始："   DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")   Environment.NewLine;


            this.pg_Bar.Value = 0;
            this.pg_Bar.Maximum = this.taskList.Count;

            // 解除阻塞
            this.cmdWaiter.Set();
        }

        /// <summary>
        /// 更新进度条
        /// </summary>
        private void On_Update()
        {
            this.pg_Bar.Value = this.pg_Bar.Value   1;
        }


        private void On_EndLog()
        {
            showEnd endDeg = new showEnd(On_UpdateTextBox);
            this.Invoke(endDeg);
        }

        private void On_UpdateTextBox()
        {
            string runStr = "结束："   DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            this.txt_log.Text = this.txt_log.Text   runStr;
        }
    }
}