コード例 #1
0
        static void Main(string[] args)
        {
            JsonFileHandler fileHandler = new JsonFileHandler();
            BookService     library     = new BookService(fileHandler);

            Console.WriteLine("-=====Menu=====-");
            Console.WriteLine("1 - Show catalog");
            Console.WriteLine("2 - Add new book");
            Console.WriteLine("3 - Remove book");
            Console.WriteLine("4 - Change book");
            Console.WriteLine("0 - Exit");
            Console.WriteLine("-==============-");
            int choice = Convert.ToInt32(Console.ReadLine());

            switch (choice)
            {
            case 1:
                library.ShowCatalog();
                break;

            case 2:
                Book new_book = new Book();
                Console.WriteLine("Input information about book");
                try
                {
                    Console.WriteLine("Input new ID");
                    new_book.Id = Convert.ToInt32(Console.ReadLine());
                }
                catch
                {
                    throw new Exception("Incorrect input!");
                }
                Console.WriteLine("Input new Title");
                new_book.Title = Console.ReadLine();
                Console.WriteLine("Input new amount of Pages");
                new_book.Pages = Convert.ToInt32(Console.ReadLine());
                library.Add(new_book);
                break;

            case 3:
                try
                {
                    library.ShowCatalog();
                    Console.WriteLine("Input necessary id");
                    library.Remove(Convert.ToInt32(Console.ReadLine()));
                }
                catch
                {
                    throw new Exception("Incorrect input!");
                }
                break;

            case 4:
                Book change_book = new Book();
                library.ShowCatalog();
                try
                {
                    Console.WriteLine("Input ID");
                    change_book.Id = Convert.ToInt32(Console.ReadLine());
                }
                catch
                {
                    throw new Exception("Incorrect input!");
                }
                Console.WriteLine("Input new information about book");
                Console.WriteLine("Input new Title");
                change_book.Title = Console.ReadLine();
                Console.WriteLine("Input new amount of Pages");
                change_book.Pages = Convert.ToInt32(Console.ReadLine());
                library.Change(change_book);
                break;

            case 0:
                break;

            default: throw new Exception("Incorrect input!");
            }
        }