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); } } } }

如上面的代码实例可知，当name属性变化时，触发了PropertyChanged事件，开发人员就可以在调用此类时，当name属性发生改变时，做相应的处理。