faunjoe的专栏

 public class Class1    {        public delegate void UserRequest(object sender, EventArgs e);//定义委托        public event UserRequest OnUserRequest;//定义一个委托类型的事件        public void run()//4.引发事件       

 using System;namespace 带事件数据的事件{     ///      /// 带事件数据的事件类，从EventArgs继承     ///      class OnUserRequestEventArgs:EventArgs     {         private string inputText;         public string InputText