public ActionResult Create(Plane plane)
        {
            if (ModelState.IsValid)
            {
                db.Planes.Add(plane);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            ViewBag.AirlineID = new SelectList(db.Airlines, "AirlineID", "Name", plane.AirlineID);
            return View(plane);
        }
 public ActionResult Edit(Plane plane)
 {
     if (ModelState.IsValid)
     {
         db.Entry(plane).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     ViewBag.AirlineID = new SelectList(db.Airlines, "AirlineID", "Name", plane.AirlineID);
     return View(plane);
 }