About database backup

I have developed one windows based software
initially in that there was a provision for taking database backup on hard disk drive by calling following query from c# front end like this

backup database hm to disk = 'C:\\databasename.bak

But now i have to deploy system to client side and there is no database as connection string is pointing to the .mdf file  of database. actual sql server is not there
so how should i take database backup