标签:事件与委托
<1>
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="事件学习.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" />
</div>
</form>
</body>
</html>
<2>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace 事件学习
{
//触发事件的对象称作发送者(sender),捕获事件并且做出响应的对象称作接收者(receiver),一个事件可以存在多个接受者
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//Button1_Click是一个方法,Button1是Button类的一个对象,Click是Button类里面定义的一个事件
Button1.Click += new EventHandler(Button1_Click); //这里将Button1的Click事件注册一个Button1_Click处理方法。相当于onclick="Button1_Click"
//Button1.Click += Button1_Click; //上面的语句也可以改写成这样
}
protected void Button1_Click(object sender, EventArgs e)
{
//if (MyClick != null)
//{
// MyClick(sender, e);
//}
Button1.Text = "我被点击了";
}
}
}标签:事件与委托
原文地址:http://blog.csdn.net/fanbin168/article/details/39007307