Build a menu for asp.net page

[zorhel]

Hi.
I will do a dynamic menu for a asp.net app.. I don't know yet if how I will
get the data for populate this menu: from a sql server database, xml file or
what, but I know it will be dynamic any probably encapsulated in a control
(user or custom).

Someone have any logic code, samples, links for that?
Thanks

Zorhel