简单事件

两个类之间交互

 1 using system;
 2 
 3 namespace event
 4 {
 5 class program
 6 {
 7 static void main(string[] args)
 8 {
 9 var a = new a();
10 program p = new program();
11 a.events += p.message;
12 a.ziduana();
13 console.readline();
14 }
15 
16 private void a_events(string a)
17 {
18 console.writeline(a);
19 }
20 
21 public void message(string a)
22 {
23 console.writeline("事件"+a);
24 }
25 }
26 
27 class a
28 {
29 public delegate void event(string a);
30 public event event events;
31 public void ziduana()
32 {
33 events("输入a");
34 }
35 }
36 }