using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{   

    public static void Main()

    {

        List<string> Titles = new List<string>(new string[] { "title1", "title2", "title3" });

        List<Book> Books = Titles.Select(s => new Book(s, string.Empty)).ToList();

        Console.WriteLine(Books[0].Title);

        Console.WriteLine(Books[0].Author == "");

    }

}

​

public class Book

{

    private string title;

    public string Title { get { return title; } }

    private string author;

    public string Author { get { return author; } }

    public Book(string _title, string _author)

    {

        this.title = _title;

        this.author = _author;

    }

}