Entities data=new Entities();



            var list = from p in data.Record

                        where p.CreateTime >= d && p.CreateTime < DateTime.Today

                        select new

                        {

                            ID = p.ID,

                            Name = p.Name,

                            UserID=p.UserID

                        };





            foreach (var item in list)

            {

                var record = data.Record.FirstOrDefault(a => a.ID == item.ID);

                 if (record != null)

                 {

                     record.RankTime = record.CreateTime.AddDays(3);

                     data.SaveChanges();





                     BusinessModel.KeywordRank mod = new KeywordRank();

                     mod.RecordID = item.ID;

                     mod.UserID = item.UserID;

                     mod.Name = item.Name;

                     mod.Rank = 0;

                     mod.CreateTime = DateTime.Now;



                     data.KeywordRank.Add(mod);

                     data.SaveChanges(); &nbs