<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default1.aspx.cs" Inherits="Default1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
.aaa {
position:relative;
background-color:red;
width:200px;
height:50px;
margin-left:5px;
float:left;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div id="Login" class="aaa">
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>，欢迎你！
<asp:Button ID="Button1" runat="server" Text="退出登陆" />
</div>
<div id="noLogin" class="aaa">
<asp:HyperLink ID="HyperLink1" runat="server">登陆</asp:HyperLink>
<asp:HyperLink ID="HyperLink2" runat="server">注册</asp:HyperLink>
</div>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Button1.Click += Button1_Click;//按钮事件
if (!IsPostBack) {
Session["user"] = "张三";//判断用户是否登陆。若登陆 则显示张三
}
//window.onload = function () 往外输出。。。 //都全部取出来 取两个 1：Login 2：noLogin
Response.Write("<script>window.onload = function () {var oLog = document.getElementById(‘Login‘);var noLog = document.getElementById(‘noLogin‘);");
if (Session["user"] != null)//判断user是否为空，若不为空咋显示oLog，隐藏noLog。
{
Response.Write("oLog.style.display = ‘block‘;noLog.style.display = ‘none‘;");//none隐藏block显示
Label1.Text = Session["user"].ToString();
}
else//若不是 则相反
{
Response.Write("oLog.style.display = ‘none‘;noLog.style.display = ‘block‘;");
}
Response.Write("};</script>");
}
void Button1_Click(object sender, EventArgs e)
{
Session["user"] = null;
}
}
时间： 2024-11-05 13:25:36