本文共 1620 字，大约阅读时间需要 5 分钟。

basepage.cs

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Data;using System.Configuration;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;namespace work012{    public class BasePage :System.Web.UI.Page    {        public BasePage()        {            this.Load += new EventHandler(BasePage_Load);         }        protected void BasePage_Load(object sender, EventArgs e)        {            if (Session["UserName"] == null)            {                //Response.Redirect("Login.aspx");                Response.Write("无权限
");            }        }    }}

login.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Login.aspx.cs" Inherits="work012.Login" %>
           
   
    
    
        
         
    
    
   

login.aspx.cs

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace work012{    public partial class Login : BasePage    {        private string date;        protected void Page_Load(object sender, EventArgs e)        {            if (date == null)            {                date = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");            }            Response.Write("Time Now is " + date + "
");            if (!IsPostBack)            {                Response.Write("第一次加载
");            }            else            {                Response.Write("回发加载
");                            }        }        protected void Button1_Click(object sender, EventArgs e)        {        }    }}