event 自定义事件

自定义事件

 1  public class Program
 2     {
 3        public event EventHandler ehdl=null;
 4         public Program()
 5         {
 6             ehdl += Program_ehdl;
 7         }
 8
 9         void Program_ehdl(object sender, EventArgs e)
10         {
11             var test=e as TestEventArgs;
12             Console.WriteLine("姓名：{0},年龄：{1},性别：{2}",test.Name,test.Age,test.Gender);
13         }
14
15
16         static void Main(string[] args)
17         {
18             Program p = new Program();
19             p.Fly();
20
21             Console.ReadKey();
22         }
23
24         private  void Fly()
25         {
26             TestEventArgs test = new TestEventArgs();
27             test.Name = "张三";
28             test.Age = "15";
29             test.Gender="男";
30             ehdl(this, test);
31
32         }
33
34     }
35     public class TestEventArgs : EventArgs
36     {
37         public string Name { get; set; }
38         public string Age { get; set; }
39         public string Gender { get; set; }
40     }

EventHandler  委托，自己也可以定义一个；

EventArgs