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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";

    }


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