public void Add(Pizzas item)
 {
     if (db.Pizzas.Any(e => e.PizzaId == item.PizzaId))
     {
         Console.WriteLine("Pizza with this id already exists");
     }
     else
     {
         db.Pizzas.Add(item);
         db.SaveChanges();
     }
 }
 public void Modify(Pizzas item)
 {
     throw new NotImplementedException();
 }