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 }

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EventHandler  委托，本身也能够定义一个；

 EventArgs