how to backup sql 2005 database from c*2005 apllication

Question

m working on the student management software on c#2005 and sql 2005 , i need to take backup of database " any session" from my application and also save it to the cd. i made differnt database for all session( for Example session07-08, session08-09) so if i want to take backup of sessiono7-08 from my c# application than wat i shud do?