多线程显示运行状态

最近碰见一个例子，Copy大文件或者网络访问的时候处理假死。 那就用多线程加个进度条(只显示运行，没有进度)来表示状态运行吧。好了，废话少说，上个例子。先看结果图：

程序说明：

点击Button，运行一个数据累加器，textBox显示每次运行的结果，ProgressBar表示运行的状态。

好了，直接贴代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace Testpro
{
    public partial class Form1 : Form
    {
        BackgroundWorker work = new BackgroundWorker();
        public Form1()
        {
            InitializeComponent();
            work.WorkerReportsProgress = true;
            work.DoWork += Count;
            work.RunWorkerCompleted += completeRun;
            Control.CheckForIllegalCrossThreadCalls = false;
            this.textBox1.ScrollBars = ScrollBars.Both;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.progressBar1.Style = ProgressBarStyle.Marquee;
            
            work.RunWorkerAsync();
        }

        private void Count(object sender, DoWorkEventArgs e)
        {            
            float num = 0.0f;
            int cun = 0;
            while (num < 5000)
            {
                cun++;
                num += 4f;              
               this.textBox1.Text += num.ToString() + "\t" + e.Result;
               if (cun == 9)
               {
                   textBox1.Text += Environment.NewLine;
                   cun = 0;
               }
            }            
        }

        public  void SetText(object num)
        {
            textBox1.Text += num.ToString() + "\n";
        }

        private void completeRun(object sender,  RunWorkerCompletedEventArgs e)
        {
            this.progressBar1.Style = ProgressBarStyle.Blocks;
            
            this.textBox1.Text += "complete";
            MessageBox.Show("Running complete.....");
        }       
    }
}