C#中,兩個事件的疊加,結果會如何?

 

前段參加了個面試,C#中,兩個事件疊加,如下

t.EventTest += delegate { Console.WriteLine("111"); };
t.EventTest += delegate { Console.WriteLine("222"); };

其輸出結果會是什麼樣的? 還是測試一下吧:

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Test1 t = new Test1();
t.EventTest += delegate { Console.WriteLine("111"); };
t.EventTest += delegate { Console.WriteLine("222"); };

t.StarEvent();
}
}
class Test1
{
public event EventHandler EventTest;
public void StarEvent()
{
if (this.EventTest != null)
this.EventTest(this, null);
}
}
}

最終,輸出結果為
111
222

看來,兩個事件的疊加,效果也是疊加的!