public static string UpdatePrice(FastFoodDbContext context, string itemName, decimal newPrice) { var item = context.Items.FirstOrDefault(i => i.Name == itemName); if (item == null) { return($"Item {itemName} not found!"); } var oldPrice = item.Price; context.Attach(item); item.Price = newPrice; context.SaveChanges(); return($"{item.Name} Price updated from ${oldPrice:F2} to ${newPrice:F2}"); }