以下是組件代碼：
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;

namespace NSEventStudy
{
 public delegate void TwoEventHandle(int flag);

 public class EventStudy : System.Web.UI.WebControls.WebControl
 {
 
  ///////////////第一種定義事件的方法////////////////////
 
  public event TwoEventHandle TwoEvent;

  public void Execute(int flag)
  {
   TwoEvent(flag);
  }

  ////////////////第二種定義事件的方法////////////////////
 
  PRivate static object _Process = new object();
  public event TwoEventHandle ThreeEvent
  {
   add
   {
    Events.AddHandler(_Process,value);
   }
   remove
   {
    Events.RemoveHandler(_Process,value);
   }
  }

  public void InnerExecute(int flag)
  {
   TwoEventHandle handle = (TwoEventHandle)Events[_Process];
   if(handle != null)
   {
    handle(flag);
   }
   else
   {
    this.RaiseBubbleEvent(this,null);
   }
  }

  protected override void Render(HtmlTextWriter writer)
  {
   base.Render (writer);
   writer.WriteLine("我愛你，中國(guó)");
  }

 }
}

測(cè)試程序：
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.sessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace TestEvent
{
 /// <summary>
 /// WebForm1 的摘要說明。
 /// </summary>
 public class WebForm1 : System.Web.UI.Page
 {
  protected System.Web.UI.WebControls.Button Button1;
  protected NSEventStudy.EventStudy EventStudy1;
 
  private void Page_Load(object sender, System.EventArgs e)
  {
   // 在此處放置用戶代碼以初始化頁(yè)面  
  }

  #region Web 窗體設(shè)計(jì)器生成的代碼
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN: 該調(diào)用是 asp.net Web 窗體設(shè)計(jì)器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
  }
 
  /// <summary>
  /// 設(shè)計(jì)器支持所需的方法 - 不要使用代碼編輯器修改
  /// 此方法的內(nèi)容。
  /// </summary>
  private void InitializeComponent()
  {   
   this.EventStudy1.ThreeEvent += new NSEventStudy.TwoEventHandle(this.EventStudy1_ThreeEvent);
   this.EventStudy1.TwoEvent += new NSEventStudy.TwoEventHandle(this.EventStudy1_TwoEvent);
   this.Button1.Click += new System.EventHandler(this.Button1_Click);
   this.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion

  private void EventStudy1_TwoEvent(int flag)
  {
   this.Response.Write("<script>javascript:alert('TwoEvent事件觸發(fā)')</script>");
  }

  private void EventStudy1_ThreeEvent(int flag)
  {
   this.Response.Write("<script>Javascript:alert('ThreeEvent事件觸發(fā)')</script>");
  }

  private void Button1_Click(object sender, System.EventArgs e)
  {
   this.EventStudy1.Execute(6);
   this.EventStudy1.InnerExecute(10);
  }
 }
}