文章或新闻访问量

首先要考虑是否是首次登陆，最好用cookie(用户的客户端存储)，如果是第一次则添加cookie。如果不是，在判断是否是同一ip，不是同一ip加一，是的话判断是否是同一天。

此方法弊端很大，清楚cookie就不能判断重复了！

            if (!IsPostBack)
            {
                if (Request.Cookies["houseid"] == null)//记录是否是第一次登陆
                {
                    HttpCookie cookieid = new HttpCookie("houseid");
                    cookieid.Value = Request.QueryString["houseid"].ToString();
                    Response.Cookies.Add(cookieid);//存取id
                    HttpCookie cookietime = new HttpCookie("time");
                    cookietime.Value = DateTime.Now.ToString();
                    Response.Cookies.Add(cookietime);//存取访问时间和日期
                    HttpCookie cookieip = new HttpCookie("ip");
                    cookieip.Value = Request.UserHostAddress.ToString();
                    Response.Cookies.Add(cookieip);//存取ip
                    hb.UpClickCount(Request.QueryString["houseid"].ToString());
                }
                else
                {
                    if (Request.Cookies["ip"].Value != Request.UserHostAddress.ToString())
                    {
                        hb.UpClickCount(Request.QueryString["houseid"].ToString());
                    }
                    else
                    {
                        DateTime dt = DateTime.Parse(Request.Cookies["time"].Value);
                        DateTime now = DateTime.Now;
                        if (dt.ToShortDateString() != now.ToShortDateString())
                        {
                            hb.UpClickCount(Request.QueryString["houseid"].ToString());
                        }
                    }
                }
            }