// @nuget: EntityFramework

// @nuget: Z.EntityFramework.Extensions

​

using System.Data.Entity;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        List<Customer> list =  new List<Customer>() { new Customer() { Name ="Customer_A" }, new Customer() { Name ="Customer_B" }, new Customer() { Name ="Customer_C" }};

        FiddleHelper.WriteTable(list);

        // BulkInsert: INSERT all entities in the database.

        using (var context = new EntityContext())

        {

            context.BulkInsert(list);

            FiddleHelper.WriteTable(list);  

        }

        // BulkInsert: Easy to customize

        using (var context = new EntityContext())

        {

            context.BulkInsert(Data(), options => options.BatchSize = 100);

            FiddleHelper.WriteTable(context.Customers.Take(5).ToList());

        }

    }

    public static List<Customer> Data() 

    {

        List<Customer>  list = new List<Customer>();

        for(int i = 0; i < 1000; i++)

        {

            list.Add(new Customer() { Name ="Customer_" + i});

        }

        return list;

    }

​

    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; }

    }

}