// @nuget: EntityFramework

// @nuget: Z.EntityFramework.Extensions

​

using System;

using System.Data.Entity;

using System.Linq;

using System.Collections.Generic;

using System.Data.Entity.Infrastructure;

public class Program

{

    public static void Main()

    {

        // BulkInsert: INSERT all entities in the database.

        using (var context = new EntityContext())

        {

            context.BulkInsert(Data()); 

        }

        using (var context = new EntityContext())

        {

            var updatedCustomer = context.Customers.Where(c => c.CustomerID == 1).FirstOrDefault();

            updatedCustomer.Name = "Updated Name";

​

            var deletedCustomer = context.Customers.Where(c => c.CustomerID == 7).FirstOrDefault();

​

            context.Customers.Remove(deletedCustomer);

​

            context.Customers.Add(new Customer { Name = "new customer" });

​

            var addedEntries = context.ChangeTracker.Entries()

                .Where(e => e.State == EntityState.Added).ToList();

​

            var modifiedEntries = context.ChangeTracker.Entries()

                .Where(e => e.State == EntityState.Modified).ToList();

​

            var deletedEntries = context.ChangeTracker.Entries()

                .Where(e => e.State == EntityState.Deleted).ToList();

            DisplayEntries(addedEntries);

            DisplayEntries(modifiedEntries);

            DisplayEntries(deletedEntries);

​

        }

    }

    private static void DisplayEntries(List<DbEntityEntry> entries)

    {

        foreach(var entry in entries)

        {

            Customer customer = entry.Entity as Customer;

            Console.WriteLine("Id: {0} \tName: {1} \t Sate: {2}", customer.CustomerID, customer.Name, entry.State);

        }

    }

    public static List<Customer> Data() 

    {

        List<Customer>  list = new List<Customer>();

        for(int i = 0; i < 1000; i++)

        {

            list.Add(new Customer() { Name ="Customer_" + i});

        }

        return list;

    }

​

    public class EntityContext : DbContext

    {

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

        {

​

        }

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

    }

    public class Customer

    {

        public int CustomerID { get; set; }

        public string Name { get; set; }

    }

}