// @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())

        {   

            Book book = new Book(){Title = "My Book Long Title"};

            context.Books.Add(book);

​

            context.SaveChanges();

            var books = context.Books.ToList();

            FiddleHelper.WriteTable(books);

        }

    }

    public class BookStore : DbContext

    {

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

        {

        }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)

        {

        }

​

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

    }

    public class Book

    {

        public int BookId { get; set; }

        [MaxLength(12)]

        public string Title { get; set; }

    }

}