public static void insert(calendar_entity db, calendar_notification newn)
 {
     newn.id = Guid.NewGuid();
     newn.createtime = DateTime.Now;
     db.calendar_notification.AddObject(newn);
     db.SaveChanges();
 }
        public static void correspondingAction(calendar_notification not,HttpSessionState session, HttpResponse response)
        {
            calendar_entity db = new calendar_entity();
            string redurl = not.redirecturl;
            Guid userid2 = (Guid)not.userid2.Value;
            string user2name= Membership.GetUser(not.userid2, true).UserName;

            DAL.Notification_DAL.deleteById(db, not.id);
            if (not.eventtype == "addfriend")
            {
                Utilities.Utilities.redirectToFriendHome(session, response,userid2,user2name);

            }

            else if (not.eventtype == "commentedOnWall")
            {
                response.Redirect("Default.aspx");
            }
            else if (not.eventtype == "joinevent")
            {
                response.Redirect(redurl);
            }
        }