public ActionResult Create(OrderItem orderitem)
        {
            if (ModelState.IsValid)
            {
                db.OrderItems.Add(orderitem);
                db.SaveChanges();
                return RedirectToAction("Index",
                                        "OrderItem",
                                        new { Order_ID = orderitem.Order_ID });
            }

            ViewBag.Item_ID = new SelectList(db.Items, "ID", "Name", orderitem.Item_ID);
            ViewBag.Order_ID = new SelectList(db.Orders, "ID", "ID", orderitem.Order_ID);
            return View(orderitem);
        }
 public ActionResult Edit(OrderItem orderitem)
 {
     if (ModelState.IsValid)
     {
         db.Entry(orderitem).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     ViewBag.Item_ID = new SelectList(db.Items, "ID", "Name", orderitem.Item_ID);
     ViewBag.Order_ID = new SelectList(db.Orders, "ID", "ID", orderitem.Order_ID);
     ViewBag.currentOrder = orderitem.Order_ID;
     return View(orderitem);
 }