using System;

public class Program

{

    public static void Main()

    {

        Book theStand = new Book("The Stand", "987SDKFH");

    }

}

​

public class Book

{

    public string Title { get; set; }

    public string ISBN { get; set; }

    public Book(string title, string isbn)

    {

        Title = title;

        ISBN =isbn;

    }

}