public void Start() { ItemManager manager = new ItemManager(); WrongInput += new PrintMessage(WrongInputErrorMessage); while (true) { Console.Clear(); UserMenus.MainMenu(); var input = Console.ReadKey(true).Key; switch (input) { case ConsoleKey.D1: FilterMethod(manager); break; case ConsoleKey.D2: manager.AddNewProduct(this); break; case ConsoleKey.D3: Environment.Exit(0); break; default: OnWrongInput("Not a valid input."); break; } } }
private void FilterMethod(ItemManager manager) { bool showProductLoop = true; Console.Clear(); manager.ShowAllProducts(); Console.WriteLine("---"); while (showProductLoop) { UserMenus.FilterMenu(); var input = Console.ReadKey(true).Key; switch (input) { case ConsoleKey.D1: manager.PrintWhere(isCheapFilter); break; case ConsoleKey.D2: manager.PrintWhere(isOldFilter); break; case ConsoleKey.D3: manager.PrintWhere(isFreshFilter); break; case ConsoleKey.D4: showProductLoop = false; break; default: OnWrongInput("Not a valid input."); break; } } }