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，
1
using
System;
2
using
System.Collections.Generic;
3
using
System.ComponentModel;
4
using
System.Data;
5
using
System.Drawing;
6
using
System.Linq;
7
using
System.Text;
8
using
System.Threading;
9
using
System.Windows.Forms;
10
11
namespace
BrowserDemo
12
{
13 public partial class Form7 : Form
14 {
15 const int argument = 20000;
16
17 public Form7()
18 {
19 InitializeComponent();
20 }
21
22 private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
23 {
24 for(var i=0;i<int.Parse(e.Argument.ToString());i++)
25 {
26 e.Result = i;
27 (sender as BackgroundWorker).ReportProgress((int)(((double)i / (double)((int)e.Argument)) * 100),i);
28 Thread.Sleep(20);
29 if (this.backgroundWorker1.CancellationPending)
30 return;
31 }
32 }
33
34 private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
35 {
36 this.listBox1.Items.Add(e.UserState);
37 this.progressBar1.Value = e.ProgressPercentage;
38 }
39
40 private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
41 {
42 MessageBox.Show("finished");
43 }
44
45 private void button1_Click(object sender, EventArgs e)
46 {
47 if (this.backgroundWorker1.IsBusy)
48 {
49 MessageBox.Show("慢则那，等着吧");
50 return;
51 }
52 this.backgroundWorker1.RunWorkerAsync(argument);
53 this.button2.Enabled = true;
54 this.button3.Enabled = true;
55
56 }
57
58 private void button2_Click(object sender, EventArgs e)
59 {
60 MessageBox.Show("111");
61 }
62
63 private void button3_Click(object sender, EventArgs e)
64 {
65 this.backgroundWorker1.CancelAsync();
66 }
67
68 private void Form7_Load(object sender, EventArgs e)
69 {
70 this.button2.Enabled = false;
71 this.button3.Enabled = false;
72 }
73 }
74}
75
using
System;2
using
System.Collections.Generic;3
using
System.ComponentModel;4
using
System.Data;5
using
System.Drawing;6
using
System.Linq;7
using
System.Text;8
using
System.Threading;9
using
System.Windows.Forms;10
11
namespace
BrowserDemo12
{
13
public partial class Form7 : Form14
{15
const int argument = 20000;16
17
public Form7()18
{19
InitializeComponent();20
}21
22
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)23
{24
for(var i=0;i<int.Parse(e.Argument.ToString());i++)25
{26
e.Result = i;27
(sender as BackgroundWorker).ReportProgress((int)(((double)i / (double)((int)e.Argument)) * 100),i);28
Thread.Sleep(20);29
if (this.backgroundWorker1.CancellationPending)30
return;31
}32
}33
34
private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)35
{36
this.listBox1.Items.Add(e.UserState);37
this.progressBar1.Value = e.ProgressPercentage;38
}39
40
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)41
{42
MessageBox.Show("finished");43
}44
45
private void button1_Click(object sender, EventArgs e)46
{47
if (this.backgroundWorker1.IsBusy)48
{49
MessageBox.Show("慢则那，等着吧");50
return;51
}52
this.backgroundWorker1.RunWorkerAsync(argument);53
this.button2.Enabled = true;54
this.button3.Enabled = true;55
56
}57
58
private void button2_Click(object sender, EventArgs e)59
{60
MessageBox.Show("111");61
}62
63
private void button3_Click(object sender, EventArgs e)64
{65
this.backgroundWorker1.CancelAsync();66
}67
68
private void Form7_Load(object sender, EventArgs e)69
{70
this.button2.Enabled = false;71
this.button3.Enabled = false;72
}73
}74
}
75
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
本文参考链接：https://www.cnblogs.com/lexus/archive/2008/08/27/1277956.html
