.NET - A demo showing how to consume .NET Events provided by EF Core DbContext

UniversityContext.cs

public class UniversityContext : DbContext
{
    public UniversityContext(DbContextOptions<UniversityContext> options)
        : base(options)
    {
        ChangeTracker.Tracked += ChangeTracker_Tracked;
        ChangeTracker.StateChanged += ChangeTracker_StateChanged;
        SavingChanges += UniversityContext_SavingChanges;
        SavedChanges += UniversityContext_SavedChanges;
        SaveChangesFailed += UniversityContext_SaveChangesFailed;
    }

    private void ChangeTracker_Tracked(object sender, EntityTrackedEventArgs e)
    {
        Console.WriteLine($"Marked for Tracking: {e.Entry.Entity}");
    }

    private void ChangeTracker_StateChanged(object sender, EntityStateChangedEventArgs e)
    {
        // YOU CAN USE AN INTERFACE OR A BASE CLASS
        // But, for this demo, we are directly typecasting to Student model
        var student = e.Entry.Entity as Student;
        switch (e.Entry.State)
        {
            case EntityState.Deleted:
                student.DeletedOn = DateTime.Now;
                Console.WriteLine($"Marked for delete: {e.Entry.Entity}");
                break;
            case EntityState.Modified:
                student.ModifiedOn = DateTime.Now;
                Console.WriteLine($"Marked for update: {e.Entry.Entity}");
                break;
            case EntityState.Added:
                student.CreatedOn = DateTime.Now;
                Console.WriteLine($"Marked for insert: {e.Entry.Entity}");
                break;
        }
    }

    private void UniversityContext_SavingChanges(object sender, SavingChangesEventArgs e)
    {
        Console.WriteLine($"Saving Changes at {DateTime.Now}");
    }

    private void UniversityContext_SavedChanges(object sender, SavedChangesEventArgs e)
    {
        Console.WriteLine($"Saved Chagnes at {DateTime.Now}");
    }

    private void UniversityContext_SaveChangesFailed(object sender, SaveChangesFailedEventArgs e)
    {
        Console.WriteLine($"Save Chagnes Failed at {DateTime.Now}");
    }

    public DbSet<Student> Students { get; set; }
}