// Entity Framework Extensions

// Doc: https://entityframework-extensions.net/bulk-savechanges

​

// @nuget: Z.EntityFramework.Extensions

// @nuget: EntityFramework

​

using System;

using System.Collections.Generic;

using System.Data.SqlClient;

using System.Data.Entity;

using System.Linq;

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

​

public class Program

{

    public static void Main()

    {       

        Z.EntityFramework.Extensions.EntityFrameworkManager.PreBulkSaveChanges = context => {           

            if(context.Database.Connection.State != System.Data.ConnectionState.Open)

            {

                    context.Database.Connection.Open();

            }

            using (var command = context.Database.Connection.CreateCommand())

            {

                command.CommandText = "EXEC sp_set_session_context 'Customer_id', 3; ";

                command.ExecuteNonQuery();

            }

        };

​

        using (var context = new EntityContext())

        {           

            context.Customers.Add(new Customer() { Code = "Customer_A"});   

​

            context.BulkSaveChanges();

            FiddleHelper.WriteTable(context.Customers.AsNoTracking().ToList());

        }

    }

    public class EntityContext : DbContext

    {

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

        {

​

        }

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

        protected override void OnModelCreating(DbModelBuilder modelBuilder)

        {

        }

    }

    public class Customer

    {

        [Key]

        [DatabaseGenerated(DatabaseGeneratedOption.None)]

        public int CustomerID { get; set; }

        public string Code { get; set; }

    } 

}