// Entity Framework Extensions

// Doc: https://entityframework-extensions.net/temporary-table

​

// @nuget: EntityFramework

// @nuget: Z.EntityFramework.Extensions

​

using System;

using System.Linq;

using System.Data.Entity;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        // TemporaryTableMinRecord: Gets or sets the minimum number of records to use a temporary table instead of using SQL derived table.

        using (var context = new EntityContext())

        {

            context.Customers.AddRange(AddToList());

            context.BulkSaveChanges(options =>

            {

                options.TemporaryTableMinRecord = 25;

            });

        }

        using (var context = new EntityContext())

        {

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

        }

    }

    public static List<Customer> AddToList()

    {

        var list = new List<Customer>();

        for (int i = 0; i < 20; 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; }

        public Boolean IsActive { get; set; }

    }

}