That’s really all you need to store complex data like a list of favorite genres in the user’s profile. All
you need to do is add a bunch of numbers to a list. The .NET run time then takes care of persisting
the profile in the database and making it available again in subsequent pages.
Of course, the list with favorite genres isn’t really useful until you actually make use of it in the site.
In the next exercise, you see how to use the list to limit the list of Reviews that users initially see
when they visit the default Reviews page.