// Entity Framework Extensions - Main Features - Bulk SaveChanges

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

​

// @nuget: Microsoft.EntityFrameworkCore.SqlServer

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

​

using Microsoft.EntityFrameworkCore;

using System;

using System.Collections.Generic;

using System.Linq;

using Microsoft.Data.SqlClient;

public class Program

{

    public static void Main()

    {

        // Just add "Bulk" prefix to "SaveChanges()"

        using (var context = new EntityContext())

        {

            context.Database.EnsureCreated();

        }

        // Easy to use

        using (var context = new EntityContext())

        {

            context.Customers.Add(new Customer() { Code = $"Info", Name = "Support Team", Email = "info@zzzprojects.com" });

            context.Customers.Add(new Customer() { Code = $"Sales", Name = "Sales Team", Email = "sales@zzzprojects.com" });

            context.BulkSaveChanges();

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

        }

        // Easy to customize

        using (var context = new EntityContext())

        {

            var customers = context.Customers.ToList();

            customers.ForEach(x => x.Name = "Best " + x.Name);

​

            context.BulkSaveChanges(options => options.BatchSize = 1000);

            FiddleHelper.WriteTable("2 - Customers (Updated)", context.Customers.Take(5).ToList());

        }

    }

​

    public class EntityContext : DbContext

    {

        public EntityContext() 

        {

        }

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

​

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)

        {

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

​

            base.OnConfiguring(optionsBuilder);

        }

    }

​

    public class Customer

    {

        public int CustomerID { get; set; }

        public string Code { get; set; }

        public string Name { get; set; }

        public string Email { get; set; }

    }

}