asp.net 操作 cookie

 protected void Button1_Click(object sender, EventArgs e) //写入Cookie
    {
        HttpCookie cookie = new HttpCookie("Info");//定义cookie对象以及名为Info的项
        DateTime dt = DateTime.Now;//定义时间对象
        TimeSpan ts = new TimeSpan(1, 0, 0, 0);//cookie有效作用时间，具体查msdn
        cookie.Expires = dt.Add(ts);//添加作用时间
        cookie.Values.Add("user", "cxbkkk");//增加属性
        cookie.Values.Add("userid", "1203");
        Response.AppendCookie(cookie);//确定写入cookie中
    }
    protected void Button2_Click(object sender, EventArgs e)//读取Cookie
    {
        if (Request.Cookies["Info"] != null)
        {
            string temp = Convert.ToString(Request.Cookies["Info"].Values["user"]) + "  " + Convert.ToString(Request.Cookies["Info"].Values["userid"]);
            //读全部就用Request.Cookies["Info"].Value)
            if (temp == "")
            {
                Response.Write("空");
            }
            else
                Response.Write(temp);
        }
        else
        {
            Response.Write("无cookie");
        }
    }
    protected void Button3_Click(object sender, EventArgs e) //修改Cookie
    {
        Response.Cookies["Info"]["user"] = "2";
        Response.Cookies["Info"].Expires = DateTime.Now.AddDays(1);
    }
    protected void Button4_Click(object sender, EventArgs e)//删除Cookie
    {
        // 删除cookie下的属性
        HttpCookie acookie = Request.Cookies["Info"];
        acookie.Values.Remove("userid");
        acookie.Expires = DateTime.Now.AddDays(1);
        Response.Cookies.Add(acookie);    
        //删除所有cookie，就是设置过期时间为现在就行了
        int limit = Request.Cookies.Count - 1;
        for (int i = 0; i < limit; i++)
        {
            acookie = Request.Cookies[i];
            acookie.Expires = DateTime.Now.AddDays(-1);
            Response.Cookies.Add(acookie);
        }       // 这下不用到处找了 
    }




每个页面下面放以下代码
<script src="http://www.cnblogs.com/clicktotal.aspx?proid=247"></script>

//写入cookie  点击率
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class clicktotal : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        
        this.clickfun();
    }
    //写入cookie
    private void writeCookie(string strId)
    {
        if (Request.Cookies["pp"] != null)
        {
            string temp = Convert.ToString(Request.Cookies["pp"].Values["id"]);
            if (temp.IndexOf(strId) >-1)//判断是否出现过
            {
                temp = temp.Replace(strId, "");
                temp += strId + "";
            }
            else
            {
                temp += strId + "";
            }
            
            Response.Cookies["pp"]["id"] = temp;
            Response.Cookies["pp"].Expires = DateTime.Now.AddDays(1);

        }
        else
        {
            HttpCookie cookie = new HttpCookie("pp");//定义cookie对象以及名为Info的项
            DateTime dt = DateTime.Now;//定义时间对象
            TimeSpan ts = new TimeSpan(1, 0, 0, 0);//cookie有效作用时间，具体查msdn
            cookie.Expires = dt.Add(ts);//添加作用时间
            cookie.Values.Add("id", strId);//增加属性
            Response.AppendCookie(cookie);//确定写入cookie中
        }
    }
   private void clickfun()//获取商品点击率
   {
        if (Request["proid"] != null)
        {
            string strId = Request["proid"];
            string strSql = "select top 1 * from product where id="+strId;
            db d = new db();
            DataTable dt = d.getDT(strSql);
            int inTotal = 0;
            if (dt.Rows.Count > 0)
            {
                if (dt.Rows[0]["totalHits"].ToString() != "")
                {
                    inTotal = Convert.ToInt32(dt.Rows[0]["totalHits"]) + 1;
                }
                else
                {
                    inTotal = 1;
                }
                strSql = "update product set totalHits="+inTotal+" where id="+strId;
                d = new db();
                int i=d.excuteSQL(strSql);
            }
            //设置cookie
            this.writeCookie(strId+"|");
            //设置cookie结束
        }
        
        Response.Write("document.write(\"\")");
   }
}


//获取cookie值
    private string getcookie()
    {
        string strReturn = "";
        if (Request.Cookies["pp"] != null)
        {
            string temp = Convert.ToString(Request.Cookies["pp"].Values["id"]);
            //读全部就用Request.Cookies["Info"].Value)
            if (temp != "")
            {
                strReturn = temp;
            }
        }
        return strReturn;
    }


   string str = this.getcookie();//获取cookie值
       // Response.Write(""+str+"");
       Response.Write( this.cchtml(str) );
    }
    //生成html并返回
    private string cchtml(string str)
    {
        string strReturn="";
        if (str != "")
        {
            string strShow = "<div id='left3'><div class='span'>你最近浏览的商品</div>";
            strShow += "<dl>";
            string[] arra = str.Split('|');//截取内字符
            //for (int i = 0; i < arra.Length; i++)

            if (arra.Length < 6)
            {


                for (int i = arra.Length - 1; i >= 0; i--)
                {
                    if (arra[i] != "")
                    {
                        string strSql = "select * from product where id=" + arra[i].ToString();
                        db d = new db();
                        DataTable dt = d.getDT(strSql);
                        if (dt.Rows.Count > 0)
                        {
                            // strShow += "<dt><a href='" + this.strRoot(arra[i].ToString()) + "/" + dt.Rows[0]["proFname"] + ".htm'><img src='" + webUrl + "/img/produce.gif' alt='" + dt.Rows[0]["proCname"] + "' border='0' /></a></dt>";
                            strShow += "<dd><a href='" + this.strRoot(arra[i].ToString()) + "/" + dt.Rows[0]["proFname"] + ".htm'>" + dt.Rows[0]["proCname"] + "</a></dd>";
                        }
                    }

                }
            }

            else
            {
                int i, j;
                for (i = 0; i < arra.Length; i++)
                    for (j = i + 1; j < arra.Length; j++)
                    {
                        string t = arra[i];
                        arra[i] = arra[j];
                        arra[j] = t;
                    }
                for (i = 0; i < 6; i++)
                {


                    if (arra[i] != "")
                    {
                        string strSql = "select * from product where id=" + arra[i].ToString();
                        db d = new db();
                        DataTable dt = d.getDT(strSql);
                        if (dt.Rows.Count > 0)
                        {
                            strShow += "<dd><a href='" + this.strRoot(arra[i].ToString()) + "/" + dt.Rows[0]["proFname"] + ".htm'>" + dt.Rows[0]["proCname"] + "</a></dd>";
                        }
                    }

                }
            }
            
            strShow += "</dl>";
            strShow += "</div>";
            strReturn = strShow;
        }
        else
        {
            string strShow = "<div id='left3'><div class='span'>你最近浏览的商品</div><dl>";
            strShow += "<dd>&nbsp;您暂时没有浏览任何产品或cookie未正确启用</dd>";
            strShow += "</dl></div>";
            strReturn = strShow;
        }
        return strReturn;
           
    }

 

 

///设置cookie
function setCookie(NameOfCookie, value, expiredays) {
    var ExpireDate = new Date();
    ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
    document.cookie = NameOfCookie + "=" + escape(value) + ((expiredays == null) ? "": "; expires=" + ExpireDate.toGMTString());
}
///获取cookie值
function getCookie(NameOfCookie) {
    if (document.cookie.length > 0) {
        begin = document.cookie.indexOf(NameOfCookie + "=");
        if (begin != -1) {
            begin += NameOfCookie.length + 1;
            end = document.cookie.indexOf(";", begin);
            if (end == -1) end = document.cookie.length;
            return unescape(document.cookie.substring(begin, end));
        }
    }
    return null;
}
///删除cookie
function delCookie(NameOfCookie) {
    if (getCookie(NameOfCookie)) {
        document.cookie = NameOfCookie + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }

}