public ActionResult remove(int?id)
        {
            List <Bookcar> li2 = TempData["Bookcar"] as List <Bookcar>;
            Bookcar        b   = li2.Where(x => x.carid == id).SingleOrDefault();

            li2.Remove(b);
            float h = 0;

            foreach (var item in li2)
            {
                h += item.bill;
            }
            TempData["bill"] = h;

            return(RedirectToAction("checkout"));
        }
        public ActionResult BookaCar(Car pi, int Id, string picuplocation, DateTime startdate, DateTime enddate, int Age)
        {
            if (Session["Customer_Id"] == null)
            {
                return(RedirectToAction("Login", "Home"));
            }
            else
            {
                Car b = db.Cars.Where(x => x.CarId == Id).SingleOrDefault();

                Bookcar bk = new Bookcar();

                bk.Prize     = b.prize;
                bk.PickupLoc = picuplocation;
                bk.carid     = b.CarId;
                bk.cartype   = b.CarType;
                bk.custid    = Convert.ToInt32(Session["Customer_Id"].ToString());
                bk.custname  = Convert.ToString(Session["FirstName"]);
                bk.age       = Age;
                bk.StartDate = Convert.ToDateTime(startdate);
                bk.EndDate   = Convert.ToDateTime(enddate);
                DateTime sdate = bk.StartDate;
                DateTime edate = bk.EndDate;

                double difference = (edate - sdate).TotalDays;
                bk.bill = (float)b.prize * (float)difference;

                ViewBag.msg = "data added...";
                if (TempData.Peek("Bookcar") == null)
                {
                    li.Add(bk);
                    TempData["Bookcar"] = li;
                }
                else
                {
                    List <Bookcar> li2 = TempData["Bookcar"] as List <Bookcar>;
                    li2.Add(bk);
                    TempData["Bookcar"] = li2;
                }

                TempData.Keep("Bookcar");


                return(RedirectToAction("checkout"));
            }
        }