public string Register(string name, string password, string tel, string select)
        {
            string msg    = string.Empty;
            bool   result = false;

            try
            {
                using (db_EnglishClassEntities db = new db_EnglishClassEntities())
                {
                    tb_User user = new tb_User();
                    user.User_Name = name;
                    user.User_PWD  = password;
                    user.Tel       = tel;
                    user.State     = select;
                    db.tb_User.Add(user);
                    db.SaveChanges();
                    if (user.State == "0")
                    {
                        tb_Plant plant = new tb_Plant();
                        plant.UID   = user.UID;
                        plant.State = "0";
                        db.tb_Plant.Add(plant);
                        db.SaveChanges();
                    }
                    result = true;
                }
            }
            catch (Exception e)
            {
                result = false;
                msg    = e.Message;
            }
            return("{\"result\":\"" + result + "\",\"Msg\":\"" + msg + "\"}");
        }
        public void Delete(int pid)
        {
            tb_Plant user = db.tb_Plant.Find(pid);

            db.tb_Plant.Remove(user);
            //user.State = "1";
            //db.Entry(user).State = EntityState.Modified;
            db.SaveChanges();
        }
        public string AddorUpdatePlant(int nums, int days)
        {
            int    UID    = int.Parse(Request.Cookies["UID"].Value);
            string msg    = string.Empty;
            int    result = 0;
            var    user   = (tb_Plant)db.tb_Plant.Where(x => x.UID == UID && x.State == "0").FirstOrDefault();

            if (user == null)
            {
                tb_Plant plant = new tb_Plant();
                plant.State      = "0";
                plant.UID        = UID;
                plant.Days       = days;
                plant.Nums       = nums;
                plant.CreateTime = DateTime.Now;
                db.tb_Plant.Add(plant);
                db.SaveChanges();
            }
            else
            {
                user.Days            = days;
                user.Nums            = nums;
                db.Entry(user).State = EntityState.Modified;
            }

            //  user.CreateTime = DateTime.Now;
            try
            {
                db.SaveChanges();
                result = 1;
            }
            catch (Exception ex)
            {
                msg = ex.Message;
            }
            return("{\"result\":\"" + result + "\",\"Msg\":\"" + msg + "\"}");
        }