EFCoreDataChange

This is yet anover audit plugin for Entity Framework Core. It provide store about entity changes, and retrives deleted or modified data after specified time point with special requests.

How to use

EfCoreDataChange will automaticly save the moment, when entity has been changed and last state of entity. The entity type must have simple or composite key

1. Install EfCoreDataChange Package

Run the following command in the Package Manager Console to install EfCoreDataChange

PM> Install-Package EfCoreDataChange

2. Include this code in "OnModelCreating" method like this

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            // Your code ----------
            modelBuilder.CreateDataChangeTracking(this.GetType());
        }

3. Use special DbContext instead of Your DbContext. Call PrepareTrackInfo() method before SaveChanges()

            using (var db = RuntimeDBContextExtention<YourDBContext>.RuntimeContext)
            {
                // Your code
                db.PrepareTrackInfo();
                db.SaveChanges();
            }

4. To obtain added/changed/deleted entities, use special metods.

            using (var db = RuntimeDBContextExtention<YourDBContext>.RuntimeContext)
            {
                // Your code
                // get deleted cats
                var deletedCats = db.Cats.Deleted<Cat>(db,DateTime.Now);

                // get changed cats
                var modifiedCats = db.Cats.AddedOrChanged<Cat>(db,DateTime.Now);

            }

5. Register in Dependency Injection. Below is sample code how You can use DI.

using EfCoreDataChange;

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext(
                RuntimeDBContextExtention<MyDBContext>.RuntimeContextType,
                options =>
                options.UseNpgsql(Configuration.GetConnectionString("DefaultConnection"));
        }