.net 中的委托和事件（适合初学者，看后绝对会领会不少）
实际上我一开始也是对事件和委托有点模糊，就去找点资料看看，碰巧看到篇不错的文章，受益匪浅。
下面是我看后写的一个模仿单击事件。
1
public class Button
2
{
3
public string name = "我是按钮";
4 public delegate void ClickEventHandler(Object sender ,ClickEventArgs e);
5 public event ClickEventHandler click;
6 public class ClickEventArgs : EventArgs
7
{
8 public readonly string name;
9 public ClickEventArgs(string name)
10 {
11 this.name = name;
12
}
13 }
14 public virtual void OnClick(ClickEventArgs e)
15 {
16 if (click != null)
17 {
18 click(this, e);
19 }
20 }
21 public void danji()
22 {
23 ClickEventArgs e = new ClickEventArgs(name);
24 OnClick(e);
25 }
26
27
}
28 public class task
29 {
30 public void OnClick(Object sender ,Button.ClickEventArgs e)
31 {
32 Console.WriteLine(e.name);
33 }
34 }
35 class ClickEvent
36 {
37 static void Main(string[] args)
38 {
39 Button btn = new Button();
40 btn.click += (new task()).OnClick;
41 btn.danji();
42 }
43 }
public class Button2
{
3
public string name = "我是按钮";4
public delegate void ClickEventHandler(Object sender ,ClickEventArgs e);5
public event ClickEventHandler click;6
public class ClickEventArgs : EventArgs7
{
8
public readonly string name;9
public ClickEventArgs(string name)10
{11
this.name = name;12
}13
}14
public virtual void OnClick(ClickEventArgs e)15
{16
if (click != null)17
{18
click(this, e); 19
}20
}21
public void danji()22
{23
ClickEventArgs e = new ClickEventArgs(name);24
OnClick(e);25
}26
27
}28
public class task29
{30
public void OnClick(Object sender ,Button.ClickEventArgs e)31
{32
Console.WriteLine(e.name);33
}34
}35
class ClickEvent36
{37
static void Main(string[] args)38
{39
Button btn = new Button();40
btn.click += (new task()).OnClick;41
btn.danji();42
}43
}
那篇文章写的非常好，我就不介绍了，给出网址，大家可以去看看。
http://www.cnblogs.com/JimmyZhang/archive/2007/09/23/903360.html
