// @nuget: EntityFramework

// @nuget: Z.EntityFramework.Plus.EF6

​

using System;

using System.Linq;

using System.Data.Entity;

using Z.EntityFramework.Plus;

​

public class Program

{

    public static void Main()

    {   

        // ADD seed data here

        using (var context = new EntityContext())

        {

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

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

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

            context.SaveChanges(new Audit());

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

        }

        using(var context = new EntityContext())

        {

            var customers = context.Customers.AsNoTracking().ToList();

            FiddleHelper.WriteTable(context.AuditEntries.Where<Customer>(1).AsNoTracking().ToList());

            FiddleHelper.WriteTable(context.AuditEntries.Where<Customer>(customers.First()).AsNoTracking().ToList());

            FiddleHelper.WriteTable(context.AuditEntries.Where(customers.First()).AsNoTracking().ToList());

            FiddleHelper.WriteTable(context.AuditEntries.Where<Customer>(customers.First().CustomerID).AsNoTracking().ToList());

        }

    }

    public class EntityContext : DbContext

    {   

        static EntityContext()

        {

            AuditManager.DefaultConfiguration.AutoSavePreAction = (context, audit) =>

                // ADD "Where(x => x.AuditEntryID == 0)" to allow multiple SaveChanges with same Audit

                (context as EntityContext).AuditEntries.AddRange(audit.Entries);

        }

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

        {

​

        }

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

        public DbSet<AuditEntry> AuditEntries { get; set; }

    }

    public class Customer

    {

        public int CustomerID { get; set; }

        public string Name { get; set; }

        public Boolean IsActive { get; set; }

    }

}