Admin/MasterPage.master.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Admin_MasterPage : System.Web.UI.MasterPage
{
    protected bool Check()
    {
        Response.Buffer = true;
        Response.CacheControl = "no-cache";
        Response.Expires = -1000;
        Response.AppendHeader("pragma", "no-cache");
        Response.AppendHeader("cache-control", "private");
        Response.Cache.SetExpires(DateTime.Now.AddSeconds(-10));
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.Cache.SetValidUntilExpires(false);


        Response.Cache.SetCacheability(HttpCacheability.NoCache); //不缓存网页
        if (Session["UserName"] == null || Session["UserName"].ToString() == "")
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if (Check())
            {
                Response.Redirect("../Login.aspx");
            }
        }
        lblDateTime.Text = "今天是" + " " + DateTime.Now.Year + "年" + DateTime.Now.Month + "月" + DateTime.Now.Day + "日";
        lblWeek.Text = getWeek();
    }
    public string getWeek()
    {
        string str = DateTime.Now.DayOfWeek.ToString();
        string strWeek = "";
        switch (str)
        {
            case "Monday":
                strWeek = "星期一";
                break;
            case "Tuesday":
                strWeek = "星期二";
                break;
            case "Wednesday":
                strWeek = "星期三";
                break;
            case "Thursday":
                strWeek = "星期四";