按照惯例先上个图,自己照着人家的例子写了一遍,基本上把这个弄懂了,这个控件就是省事,不懂线程原理的人也可使,ms就是厉害,生产力节节提高哈,
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Windows.Forms;
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namespace BrowserDemo
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{
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public partial class Form7 : Form
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{
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const int argument = 20000;
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public Form7()
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{
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InitializeComponent();
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}
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private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
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{
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for(var i=0;i<int.Parse(e.Argument.ToString());i++)
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{
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e.Result = i;
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(sender as BackgroundWorker).ReportProgress((int)(((double)i / (double)((int)e.Argument)) * 100),i);
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Thread.Sleep(20);
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if (this.backgroundWorker1.CancellationPending)
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return;
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}
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}
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private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
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{
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this.listBox1.Items.Add(e.UserState);
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this.progressBar1.Value = e.ProgressPercentage;
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}
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private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
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{
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MessageBox.Show("finished");
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}
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private void button1_Click(object sender, EventArgs e)
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{
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if (this.backgroundWorker1.IsBusy)
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{
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MessageBox.Show("慢则那,等着吧");
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return;
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}
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this.backgroundWorker1.RunWorkerAsync(argument);
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this.button2.Enabled = true;
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this.button3.Enabled = true;
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}
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private void button2_Click(object sender, EventArgs e)
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{
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MessageBox.Show("111");
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}
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private void button3_Click(object sender, EventArgs e)
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{
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this.backgroundWorker1.CancelAsync();
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}
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private void Form7_Load(object sender, EventArgs e)
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{
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this.button2.Enabled = false;
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this.button3.Enabled = false;
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}
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}
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}
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完整的工程如下
https://files.cnblogs.com/lexus/BrowserDemo.7z
相关资源,发现msdn上写得比较还好,不过自己写一遍自己就清楚了,我发现网上的msdn,是不是和vs2008里的光盘里的那个msdn不一样,有些资源为什么在光盘上的找不到呢,等我采集程序做好了,我要把它都抓下来,占为已有,嘿嘿
http://msdn.microsoft.com/zh-cn/library/ms233672(VS.80).aspx