public static int Add(string make, int year) { var id = Cars.Count == 0 ? 1 : Cars.Max(c => c.Id) + 1; var car = new Car { Id = id, Make = make, Year = year }; Cars.Add(car); return car.Id; }
private static string GetDescription(Car car) { return string.Format("{0} ({1})", car.Make, car.Year); }