Calendar Control "Month"

Is there a property of the Calendar control that identifies the month displayed?  I want to use a calendar control as part of a reservation system.  When it renders the month, I want to mark days that are already reserved in some way.  To do that, I'll need to query a database for reservations that fall in the month being displayed.  I haven't found anything in my book that tells me how to retrieve the month from the calendar control so I can use it in a query.
...