// Entity Framework Classic

// Doc: https://entityframework-classic.net/bulk-insert

​

// @nuget: Z.EntityFramework.Classic

​

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Data.Entity;

​

public class Program

{

    public static void Main()

    {

        var customers = GenerateCustomers(10);

        using (var context = new EntityContext())

        {

            FiddleHelper.WriteTable("1 - Customers Before", context.Customers);

            context.BulkInsert(customers, options => {

                options.ColumnInputExpression = x => new { x.Code, x.CreatedDate };

            });

            FiddleHelper.WriteTable("2 - Customers After", context.Customers);

        }       

    }

​

    public static List<Customer> GenerateCustomers(int count)

    {

        var customers = new List<Customer>();

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

        {

            customers.Add(new Customer() { Code = "Inserted_" + i, Name = "Skipped_" + i, CreatedDate = DateTime.Now, ModifiedDate = DateTime.Now });

        }

        return customers;

    }

​

    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 Code { get; set; }

        public string Name { get; set; }

        public DateTime? CreatedDate { get; set; }

        public DateTime? ModifiedDate { get; set; }

    }

}