// @nuget: EntityFramework

// @nuget: Z.EntityFramework.Extensions

​

using System;

using System.Data.Entity;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

public class Program

{

    public static void Main()

    {

        List<Customer> list1 =  new List<Customer>() { new Customer() { Name ="Customer_A", Description = "Description" , IsActive = false }, 

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

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

        List<Customer> list2 =  new List<Customer>() { new Customer() { Name ="Customer_A", Description = "Description_Updated" , IsActive = false }, 

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

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

        // ColumnOutputExpression: Gets or sets columns to map with the direction Output.

        using (var context = new EntityContext())

        {

            context.BulkInsert(list1, options => {

                options.ColumnPrimaryKeyExpression = e => e.Name;

                options.AllowDuplicateKeys = true;

                options.IncludeGraph = true;

            });

            FiddleHelper.WriteTable("Table 1",list1);

        }

        using (var context = new EntityContext())

        {

            context.BulkMerge(list2, options => {

                options.IncludeGraph = true;

                options.IncludeGraphOperationBuilder = buidler => {

                    options.ColumnPrimaryKeyExpression = e => e.Name;

                    options.AllowDuplicateKeys = true;

                };

            });

            FiddleHelper.WriteTable("Table 2",list2);

        }

    }

​

    public class EntityContext : DbContext

    {

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

        {

​

        }

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

    }

    public class Customer

    {

        [Key]

        public int CustomerID { get; set; }

        [Index(IsUnique = true)]

        [MaxLength(256)]

        public string Name { get; set; }

        public string Description { get; set; }

        public Boolean IsActive { get; set; }

    }

}