// @nuget: EntityFramework

​

using System;

using System.Data.Entity;

using System.Linq;

using System.Collections.Generic;

using System.Data.Entity.Infrastructure;

​

public class Program

{

    public static void Main()

    {

        using (var context = new EntityContext())

        {

            var customer = new Customer()

            {

                Name = "John"

            };

​

            context.Customers.Add(customer);

            context.SaveChanges();

            int id = customer.CustomerID;

            Console.WriteLine(id);

        }

    }

​

    public class EntityContext : DbContext

    {

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

        {

​

        }

        public DbSet<Customer> Customers { get; set; }

    }

    public class Customer

    {

        public int CustomerID { get; set; }

        public string Name { get; set; }

    }

}