public IActionResult Update(Crust crust) { var res = _db.Crusts.Single(c => c.Id == crust.Id); res.Name = crust.Name; res.Price = crust.Price; _db.Attach(res); _db.SaveChanges(); var res1 = _db.Entry <Crust>(new Crust()); res1.State = EntityState.Added; _db.SaveChanges(); return(RedirectToAction("Read")); }