c#中实现当一个类实例的属性值改变时，触发事件调用另一个方法

using System;

namespace ConsoleApplication
{
class Program
{
static void Main(string[] args)
{
people p = new people("Name1");
p.PropertyChanged += new EventHandler(p_PropertyChanged);//注册事件处理函数
p.Name = "Name2";
Console.ReadKey();
}

static void p_PropertyChanged(object sender, EventArgs e)//事件的处理函数
{
Console.WriteLine("NamePropertyChanged:"+(sender as people).Name);
}
}
class people
{

//事件名
public event EventHandler PropertyChanged;
private string name=String .Empty;
public people(string name)
{
this.name = name;
}
public string Name
{
get { return name; }
set
{
name = value;
this.OnPropertyChanged(new EventArgs());//每次改变Name值调用方法;
}
}

private void OnPropertyChanged(EventArgs eventArgs)
{
if (this.PropertyChanged != null)//判断事件是否有处理函数
{
this.PropertyChanged(this, eventArgs);
}
}
}
}