为每个页面加上Session判断的小例子

首先新建一个类，继承自system.web.ui.page，然后重写oninit，如下：

using system;
using system.data;
using system.configuration;
using system.linq;
using system.web;
using system.web.security;
using system.web.ui;
using system.web.ui.htmlcontrols;
using system.web.ui.webcontrols;
using system.web.ui.webcontrols.webparts;

namespace fusession
{
    public class judgesession : system.web.ui.page
    {
        protected override void oninit(eventargs e)
        {
            base.oninit(e);
            if (session.keys.count <= 0)
            {
                response.redirect("~/tiaozh.htm", true);
            }
            else
            {
                if (session["userid"] == null && session["qx"] == null && session["dept"] == null && session["username"] == null && session["qxtype"]==null)
                {
                    response.redirect("~/tiaozh.htm", true);
                }
            }
        }      
    }
}

在页面中按照如下方法引用即可。

public partial class qrdeptman_home : fusession.judgesession