把多条数据序列化存储在cookie并取出

namespace shendeng.lottery.helper
{
    public class ControllerHelper
    {
        /// <summary>
        /// 取出公告
        /// </summary>
        /// <returns></returns>
        public static List<New> GetNewList()
        {
            List<New> list = null;
            System.Web.Script.Serialization.JavaScriptSerializer jss = new System.Web.Script.Serialization.JavaScriptSerializer();
            //如果cookie里有值就直接取
            if (System.Web.HttpContext.Current.Request.Cookies["news"] != null)
            {
                string strNews = System.Web.HttpContext.Current.Request.Cookies["news"].Value;
                if (!string.IsNullOrEmpty(strNews))
                {
                    list = jss.Deserialize<List<New>>(strNews);
                }
            }
            else
            {
                //lotteryDataContex datas = new DatabaseFactory().Get();
                //公告类型
                Guid newtypeId = Guid.Parse("6029379D-06D0-42E8-8DE6-872B4A621B65");
                list = new NewRepository(new DatabaseFactory()).GetTopManyOrderBy(n => n.NewTypeId == newtypeId && n.StartTime < DateTime.Now && n.EndTime > DateTime.Now && n.State != 9 && n.Enabled == true, n => n.CreateTime, 5, true).ToList();
                //序列化存入cookie
                string serList = jss.Serialize(list);
                HttpCookie hc = new HttpCookie("news", serList);
                hc.Expires = DateTime.Now.AddHours(2);
                System.Web.HttpContext.Current.Response.Cookies.Add(hc);
            }
            return list;
        }



    }
}