// Entity Framework Extensions

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

​

// @nuget: Microsoft.EntityFrameworkCore.SqlServer

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

​

using System;

using System.Linq;

using System.Text;

using Microsoft.EntityFrameworkCore;

using System.Collections.Generic;

using Microsoft.Data.SqlClient;

using Z.BulkOperations;

​

public class Program

{

    public static void Main()

    {

        using (var context = new EntityContext())

        {

            context.Database.EnsureCreated();

        }

        SeedDatabase();

        Execute();

    }

    public static void Execute()

    {

        using (var context = new EntityContext())

        {

            // We will execute a BulkMerge on a list that contains 1 new customer and 2 existing customers.

            var list = context.Customers.ToList();

            list.ForEach(c => { c.Name += "_Updated"; c.Description += "_Updated"; });

            list.Add(new Customer() { Name = "Customer_C_Inserted", Description = "Description_Customer_C_Inserted", IsActive = false });

​

​

            // Execute

            var sb = new StringBuilder();

            context.BulkMerge(list, options =>

            {

                options.UseLogDump = true;

                options.LogDump = sb;

            });

​

            // Result

            Console.WriteLine(sb.ToString());

        }

    }

​

    public static void SeedDatabase()

    {

        using (var context = new EntityContext())

        {

            context.Customers.Add(new Customer() { Name ="Customer_A", Description = "Description_Customer_A", IsActive = false });

            context.Customers.Add(new Customer() { Name ="Customer_B", Description = "Description_Customer_B", IsActive = false });

            context.BulkSaveChanges();  

        }

    }

    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; }

    }

}