Cookie对应多个值的用法、访问次数

protected void Page_Load(object sender, EventArgs e)    {        //声明一个HttpCookie的引用        HttpCookie cookie = null;        //统计访问的次数        int count = 0;        //判断是页面加传        if (!IsPostBack)         {            UserInfo userInfo = Session["userInfo"] as UserInfo;            if (userInfo == null)                Response.Redirect("Login.aspx");            else if (userInfo.UserName != "恰嬉猫" ||                userInfo.PassWord != "123456")                Response.Redirect("Login.aspx");            else            {                //从客户端读取名为"Login"的cookie                cookie = Request.Cookies["Login"];                //如果不存在的话,也就是第一次写这个cookie，即首次登录                if (cookie == null)                {                    //如果客户端没有这个cookie,实例化名为Login的cookie                    cookie = new HttpCookie("Login");                    //访问次数加加                    count++;                    cookie.Values["loginName"] = userInfo.UserName;                    cookie.Values["dateTime"] = DateTime.Now.ToString();                    cookie.Values["count"] = count.ToString();                    cookie.Expires = DateTime.Now.AddDays(30);                    //写cookie到客户端                    Response.Cookies.Add(cookie);                }                else   //当客户端有当前查找的cookie时                {                    //读取访问次数                    count =int.Parse(cookie.Values["count"].ToString());                    //次数加加                    count++;                    cookie.Values["count"] = count.ToString();                    //读取登录名                    cookie.Values["loginName"] = userInfo.UserName;                    //读取登录时间                    cookie.Values["dateTime"] = DateTime.Now.ToString();                    //Cookie 的有效时间：一个月                    cookie.Expires = DateTime.Now.AddDays(30);                    //更新cookie集合中现有的cookie值                    Response.Cookies.Set(cookie);                }                Response.Write(userInfo.UserName + "欢迎您!");            }        }    }   ---------- 用法 ---------- protected void Page_Load(object sender, EventArgs e)    {        HttpCookie cookie = Request.Cookies["Login"];        if (cookie == null)            {            Response.Write("<br>没有登录信息！");        }        else        {            Response.Write("<br>用户名：" + cookie["loginName"].ToString());            Response.Write("<br><br>上次访问时间：" + cookie["dateTime"].ToString());            Response.Write("<br><br>访问次数：" + cookie["count"].ToString());        }    }