// Entity Framework Extensions - Main Features - Bulk Contains

// 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.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

using System.Linq;

using Microsoft.Data.SqlClient;

public class Program

{

    public static void Main()

    {

        using (var context = new EntityContext())

        {

            context.Database.EnsureCreated();

        }

        // SEED database

        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());           

        }

        // Return customers from the database matching customers from the list

        using (var context = new EntityContext())

        {

            var listCustomers = new List<Customer>() { new Customer() { CustomerID = 1 }, new Customer() { CustomerID = 3 }};

            var databaseCustomers = context.Customers.WhereBulkContains(listCustomers).ToList();

            FiddleHelper.WriteTable("2 - Database Customers", databaseCustomers);       

        }

        // Return customers from the list matching customers from the database

        using (var context = new EntityContext())

        {

            var listCustomers = new List<Customer>() { new Customer() { Name = "Sales Team", Email = "sales@zzzprojects.com" }, new Customer() { Name = "Random", Email = "Random" }};

            var sourceCustomers = context.Customers

                .WhereBulkContainsFilterList(listCustomers, x => new { x.Email, x.Name }).ToList();

            FiddleHelper.WriteTable("3 - Source Customers", sourceCustomers);       

        }

    }

​

    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; }

    }

}