C#

public class ViewButtonText
{
    public string ButtonText { get; set; }
}

@model Commands.Models.ViewButtonText
<input type="submit" name="submit" value=@Model.ButtonText>
<input type="submit" name="submit" value="Cancel" />

public class Book
    {
        public String BookName { get; set; }
        public String AuthorName { get; set; }
        public int NumberOfCopiesInStock { get; set; }
        public String ISBN { get; set; }

        public Book(String bookName, String authorName, int numberOfCopiesInStock, String isbn)
        {
            this.BookName = bookName;
            this.AuthorName = authorName;
            this.NumberOfCopiesInStock = numberOfCopiesInStock;
            this.ISBN = isbn;
        }

        public override String ToString()
        {
            return ("BookName: " + BookName
                  + "\n"
                  + "Author Name: " + AuthorName
                  + "\n"
                  + "Number Of Copies: " + NumberOfCopiesInStock
                  + "\n"
                  + "ISBN: " + ISBN);
        }
    }

public class Search
    {
        public Boolean SearchForBook()
        {
            Console.WriteLine("Please enter name of book: ");
            String search = Console.ReadLine();
            UserInput.MakeTheComputerSleep();
            foreach (Book b in UserInput.bookList)
            {
                if (b.BookName.Equals(search))
                {
                    Console.WriteLine(b);
                    return true;
                }
            }
            Console.WriteLine("Book doesn't exist! ");
            return false;
        }
    }

<pre>public class UserInput
    {
        public static Boolean KeepGoing = true;
        public static List<Book> bookList = new List<Book>();
        private static readonly String INPUT_ERROR_MESSAGE = "Please only enter NUMBERS!";
        private static readonly String INVALID_CHOICE = "INVALID CHOICE ENTERED!";
        private static readonly String SEARCH_MESSAGE = "Searching for book,please wait......";
        private static Random RandomObject = new Random();

        public static void WelcomeMessage()
        {
            Console.WriteLine("********************");
            Console.WriteLine("*       Cork       *");
            Console.WriteLine("*      Library     *");
            Console.WriteLine("********************");
        }

        private static void MenuHeader()
        {
            Console.WriteLine("********************");
            Console.WriteLine("*       Menu       *");
            Console.WriteLine("*      Options     *");
            Console.WriteLine("********************");
        }

        private static void MenuOptions()
        {
            Console.WriteLine("1.) Add Book.             ");
            Console.WriteLine("2.) Search for Book.      ");
            Console.WriteLine("3.) Delete Book.          ");
            Console.WriteLine("4.) Display all Book.     ");
            Console.WriteLine("0.) Exit.                 ");
        }

        public static void GetUserInput()
        {
            int choice;
            MenuHeader();
            do
            {
                MenuOptions();
                Console.WriteLine(">");
                choice = 0;
                while (!int.TryParse(Console.ReadLine(), out choice))
                {
                    Console.WriteLine(INPUT_ERROR_MESSAGE);
                }
                PickChoice(choice);
            } while (choice != 0);
        }

        private static void PickChoice(int choice)
        {
            switch (choice)
            {
                case 1:
                    AddBook addBook = new AddBook();
                    addBook.EnterBookInfo();
                    break;

                case 2:
                    Search search = new Search();
                    search.SearchForBook();
                    break;

                case 3:
                    break;

                case 4:
                    
                    AddBook addBook1 = new AddBook();
                    addBook1.PrintListOfBooks();
                    break;

                case 0:
                    Exit exit = new Exit();
                    exit.Exit_Application();
                    break;

                default:
                    Console.WriteLine(INVALID_CHOICE);
                    break;
            }
        }

        public static void MakeTheComputerSleep()
        {
            int number = RandomObject.Next(10) + 1;
            Console.WriteLine("Searching for Book.......");
            Thread.Sleep(number * 1000);
        }

        
    }

public class AddBook
    {
        public void EnterBookInfo()
        {
            while (UserInput.KeepGoing)
            {

                Console.WriteLine("Please enter name of book: ");
                String BookName = Console.ReadLine();

                if (BookName.Equals("end"))
                {
                    break;
                }

                Console.WriteLine("Please enter Author Name: ");
                String AuthorName = Console.ReadLine();

                Console.WriteLine("Please enter ISBN Number: ");
                String ISBN = Console.ReadLine();

                Console.WriteLine("Please enter number of books: ");
                int NumberOfCopiesInStock = Convert.ToInt32(Console.ReadLine());

                Book book1 = new Book("Neverwhere", "Neil Gaimen", 1, "aaaaa");
                Book book = new Book(BookName, AuthorName, NumberOfCopiesInStock, ISBN);
                UserInput.bookList.Add(book);
                UserInput.bookList.Add(book1);

            }

        }

        public void PrintListOfBooks()
        {
            foreach (Book b in UserInput.bookList)
            {
                Console.WriteLine(b.ToString());
                Console.WriteLine();
            }
        }
    }

class Program
    {
        public static void Main(string[] args)
        {
            UserInput.WelcomeMessage();
            UserInput.GetUserInput();
        }
    }