event.cs

深入浅出C＃,学习C#比较好的用例,能够很快掌握C#.

using System;

public delegate void Mydelegate1();
interface Myinterface1
{
	event Mydelegate1 Myevent1;
	void triggerevent1();
}

public delegate void Mydelegate2();
interface Myinterface2
{
	event Mydelegate2 Myevent2;
	void triggerevent2();
}

class Myclass:Myinterface1,Myinterface2
{
	public event Mydelegate2 Myevent2;
	public event Mydelegate1 Myevent1;

 
	public void triggerevent1()
	{
		if(Myevent1!=null)
		{
			Myevent1();
		}
		else
		{
			Console.WriteLine("Myevent1 is null.");
		}
	}
	public void triggerevent2()
	{
		if(Myevent2!=null)
		{
			Myevent2();
		}
		else
		{
			Console.WriteLine("Myevent2 is null.");
		}
	}

}

class Mainclass
{
	public static void Main()
	{
		Myclass myclass=new Myclass();
		Myinterface1 myinter1=(Myinterface1)myclass;

		myinter1.Myevent1+=new Mydelegate1(catchevent1);//绑定事件
		myinter1.triggerevent1();
         
		Myinterface2 myinter2=(Myinterface2)myclass;
		myinter2.Myevent2+=new Mydelegate2(catchevent2); //绑定事件
		myinter2.triggerevent2();
	}

	public static void catchevent1()
	{
		Console.WriteLine("This is called when event1 happened.");
	}
	public static void catchevent2()
	{
		Console.WriteLine("This is called when event2 happened.");
	}
}