// @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()

    {

        using (var context = new BookStore())

        {

            Category category1 = new Category()

            {

                CategoryName = "category 1",

            };

            Category category2= new Category()

            {

                CategoryName = "category 2",

            };

            Book book1 = new Book()

            {

                Title = "MyBook 1",

            };

            Book book2 = new Book()

            {

                Title = "MyBook 2",

            };

            context.Books.Add(book1);

            context.Books.Add(book2);

            context.Categories.Add(category1);

            context.Categories.Add(category2);

​

            context.SaveChanges();

            var categories = context.Categories.ToList();

            var books = context.Books.ToList();

​

            FiddleHelper.WriteTable(books);

            FiddleHelper.WriteTable(categories);

​

        }

    }

    public class BookStore : DbContext

    {

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

        {

        }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)

        {

        }

​

        public DbSet<Category> Categories { get; set; }

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

    }

​

    public class Book

    {

        public int BookId { get; set; }

        public string Title { get; set; }

    }

​

    public class Category

    {

        [Key]

        public int CatId { get; set; }

        public string CategoryName { get; set; }

    }

}