EntityFramework SavingChanges event

FoundationContext

namespace Foundation.Data.Sql.EntityFramework
{
    using System; 
    using System.Data.Entity;
    using System.Data.Entity.Infrastructure;

    using Foundation.Core.Abstractions;
    using Foundation.Infrastructure.Common.Data;

    public class FoundationContext : DbContext
    {   
        public FoundationContext() 
            : base("DefaultConnection")
        {
            var objectContext = ((IObjectContextAdapter)this).ObjectContext;
            objectContext.SavingChanges += (sender, args) =>
            {
                var now = DateTime.UtcNow;
                foreach (var entry in this.ChangeTracker.Entries<IEntityStorable>())
                {
                    var entity = entry.Entity;
                    switch (entry.State)
                    {
                        case EntityState.Added:
                            entity.CreatedDate = now;
                            entity.UpdatedDate = now;
                            break;
                        case EntityState.Modified:
                            entity.UpdatedDate = now;
                            break;
                    }
                }

                this.ChangeTracker.DetectChanges();
            };
        }

        public DbSet<Models.Environment> Environments { get; set; }

        public static FoundationContext Create()
        {
            return new FoundationContext();
        }
    }
}