public ActionResult ChangePickupDay()
        {
            var days  = GetAllDays();
            var model = new PickupDayModel();

            model.Days = GetSelectListItems(days);
            return(View(model));
        }
        public ActionResult ChangePickupDay(PickupDayModel model)
        {
            var days = GetAllDays();

            model.Days = GetSelectListItems(days);
            if (ModelState.IsValid)
            {
                Session["PickupDayModel"] = model;
                return(RedirectToAction("Done"));
            }
            return(View("ChangeDay", model));
        }