using System;

using System.Collections;

​

namespace ArrayListGenerics

{

    public class Program

    {

        public static void Main(string[] args)

        {

             var books = new ArrayList<Book> {new Book("Moby Dick", 254)};

​

             foreach (var b in books)

            {

                var book = (Book)b;

                //Console.WriteLine(book.Title);

            }

​

        }

    }

​

    class Book

    {

        public string Title { get; set; }

        public int NumberOfPages { get; set; }

​

        public Book(string title, int pages)

        {

            Title = title;

            NumberOfPages = pages;

        }

    }

​

    class ArrayList<T> : IEnumerable

    {

        internal void Add(Book book)

        {

            throw new NotImplementedException();

        }

​

        public IEnumerator GetEnumerator()

        {

            throw new NotImplementedException();

        }

    }

}

​