protected void Page_Load(object sender, EventArgs e)
{}

public class BasePage : System.Web.UI.Page
{
//pageunload事件，并不是指瀏覽器關(guān)閉，而是指頁(yè)面關(guān)閉，所以刷新的時(shí)候，依然會(huì)執(zhí)行以下事件
protected void Page_Unload(object sender, EventArgs e)
{
}
protected override void OnPreInit(EventArgs e)
{
base.OnPreInit(e);
if (!SessionData.IsLogin())
{//這里寫(xiě) 跳轉(zhuǎn)到登陸頁(yè)面：例如：
Response.Redirect(string.Format("~/ReLogin.aspx?Page={0}", Request.Path));
}}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using ExpressPlatform.Common;
namespace ExpressPlatform.Web.AppCode
{
public class SessionKey
{
public const string UserInfo = "user";
}
/// <summary>
/// 所有session中的數(shù)據(jù)，在該類(lèi)管理
/// </summary>
public class SessionData
{
/// <summary>
/// 獲取session 中的 用戶(hù)信息
/// </summary>
/// <returns></returns>
public static MdlSessionCustomerInfo GetUserInfo()
{
MdlSessionCustomerInfo userInfo = SessionManager<MdlSessionCustomerInfo>.GetSessionObject(SessionKey.UserInfo);
if (userInfo == null)
{
userInfo = new MdlSessionCustomerInfo();
//把內(nèi)容儲(chǔ)存到應(yīng)用程序
SessionManager<MdlSessionCustomerInfo>.SetSessionObject(SessionKey.UserInfo, userInfo);
}
return userInfo;
}
/// <summary>
/// 重新設(shè)置session 中的用戶(hù)信息
/// </summary>
/// <param name="userInfo"></param>
public static void SetUserInfo(MdlSessionCustomerInfo userInfo)
{
SessionManager<MdlSessionCustomerInfo>.SetSessionObject(SessionKey.UserInfo, userInfo);
}
/// <summary>
/// 清楚session中用戶(hù)信息
/// </summary>
public static void ClearUserInfo()
{
SessionManager<MdlSessionCustomerInfo>.SetSessionObject(SessionKey.UserInfo, null);
}
/// <summary>
/// 是否登入
/// </summary>
/// <returns></returns>
public static bool IsLogin()
{
bool ret = false;
MdlSessionCustomerInfo userInfo = SessionManager<MdlSessionCustomerInfo>.GetSessionObject(SessionKey.UserInfo);
if (userInfo != null)
ret = true;
return ret;
}
}
}

public class BasePage : System.Web.UI.Page