// Entity Framework Extensions

// Doc: https://entityframework-extensions.net/bulk-operation-executing

​

// @nuget: Microsoft.EntityFrameworkCore.SqlServer

// @nuget: Z.EntityFramework.Extensions.EFCore

​

using System;

using System.Linq;

using Microsoft.EntityFrameworkCore;

using System.Collections.Generic;

using Microsoft.Data.SqlClient;

public class Program

{

    public static void Main()

    {

        using (var context = new EntityContext())

        {

            context.Database.EnsureCreated();

        }

        var list = new List<Customer>() 

        { 

            new Customer()  { Name ="Customer_A", IsActive = true},

            new Customer()  { Name ="Customer_B", IsActive = true},

            new Customer()  { Name ="Customer_C", IsActive = true}

        };

​

        // BulkOperationExecuting: Gets or sets an action to execute `before` the bulk operation is executed.

        using (var context = new EntityContext())

        {

            context.Customers.AddRange(list);

            context.BulkSaveChanges(options => 

            {

                options.BulkOperationExecuting = bulkOperation => 

                {

                    list.ForEach(x =>  

                    { 

                        x.Description = "Before_Execution_Description"; 

                        x.IsActive = false;

                    });

                };

            });

        }

        using (var context = new EntityContext())

        {

            FiddleHelper.WriteTable("Table",context.Customers.ToList());    

            FiddleHelper.WriteTable("List",list);   

        }

    }

​

    public class EntityContext : DbContext

    {

        public EntityContext() 

        {

        }

​

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)

        {

            optionsBuilder.UseSqlServer(new SqlConnection(FiddleHelper.GetConnectionStringSqlServer()));

​

            base.OnConfiguring(optionsBuilder);

        }

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

    }

    public class Customer

    {

        public int CustomerID { get; set; }

        public string Name { get; set; }

        public string Description { get; set; }

        public Boolean IsActive { get; set; }

    }

}