using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

namespace Event
{
    public partial class _Default : System.Web.UI.Page
    {
        public delegate void buttonHandler(object sender, EventArgs e);
        public buttonHandler buttonEvent;

        protected void Page_Load(object sender, EventArgs e)
        {

        }
 
        public void CallMe()
        {
            EventArgs e = new EventArgs();
            OnbuttonEvent(e); 
        }

        public void OnbuttonEvent(EventArgs e)
        {
            if (buttonEvent != null)
            {
                buttonEvent(this,e);  
            }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            Label1.Text = "Button1点击";
            buttonEvent += new buttonHandler(Button2_Click);
            CallMe();
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            Label1.Text += ",Button2点击";
            //buttonEvent += new buttonHandler(Button1_Click);
            //CallMe();
        }
    }
}

 

========================================

 

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

namespace Event
{
    public partial class _Default : System.Web.UI.Page
    {
        public delegate void buttonHandler(object sender, ButtonEventArgs e);
        public buttonHandler buttonEvent;

        protected void Page_Load(object sender, EventArgs e)
        {

        }

        //自定义事件参数类型,传递Name值.
        public class ButtonEventArgs : EventArgs
        {
            public string Name;
            public ButtonEventArgs(string name)
            {
                this.Name = name;
            }
        }

        public void CallMe(string name)
        {
            ButtonEventArgs e = new ButtonEventArgs(name);
            e.Name = name;
            OnbuttonEvent(e); 
        }

        public void OnbuttonEvent(ButtonEventArgs e)
        {
            if (buttonEvent != null)
            {
                buttonEvent(this,e);  
            }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            Label1.Text = "Button1点击";
            buttonEvent += new buttonHandler(Button2_Click);
            CallMe("Button1");
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            Label1.Text += ",Button2点击";
            //buttonEvent += new buttonHandler(Button1_Click);
            //CallMe("Button2");
        }
    }
}