// @nuget: EntityFramework

​

using System;

using System.Data.Entity;

using System.Linq;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations.Schema;

using System.ComponentModel.DataAnnotations;

​

public class Program

{

    public static void Main()

    {

        InsertData();

        using (var context = new BookStore())

        {

            context.Database.Log = Console.WriteLine;

            var authors = context.Authors

                //.Include(a => a.Books)

                .ToList();

        }

    }

    public static void DisplayData(List<Author> list)

    {

        foreach(var author in list)

        {

            Console.WriteLine("Author Name: " + author.Name);

            Console.WriteLine("\tBook List:");

            foreach(var book in author.Books)

            {

                Console.WriteLine("\t\t" + book.Title);

            }

        }

    }

    public static void InsertData()

    {

        using (var context = new BookStore())

        {

            Author author1 = new Author()

            {

                Name = "Mark",

                Books = new List<Book>

                {

                    new Book() { Title = "Fundamentals of Computer Programming with C#"},

                    new Book() { Title = "Java: A Beginner's Guide"},

                }

            };

            Author author2 = new Author()

            {

                Name = "Andy",

                Books = new List<Book>

                {

                    new Book() { Title = "SQL: The Ultimate Beginners Guide"}

                }

            };

            Author author3 = new Author()

            {

                Name = "Johny",

                Books = new List<Book>

                {

                    new Book() { Title = "Learn VB.NET"},

                    new Book() { Title = "C# Fundamentals for Absolute Beginners"},

                }

            };

            context.Authors.Add(author1);

            context.Authors.Add(author2);

            context.Authors.Add(author3);

​

            context.SaveChanges();

        }

    }

    public class BookStore : DbContext

    {

        public BookStore() : base(FiddleHelper.GetConnectionStringSqlServer())

        {

        }

​

        public DbSet<Author> Authors { get; set; }

        public DbSet<Book> Books { get; set; }

    }

​

    public class Book

    {

        public int Id { get; set; }

        public string Title { get; set; }

        public int AuthorId { get; set; }

        [ForeignKey("AuthorId")]

        public Author Author { get; set; }

    }

​

    public class Author

    {

        public int AuthorId { get; set; }

        public string Name { get; set; }

        public virtual ICollection<Book> Books { get; set; }

    }

}