Can you enter action replay codes on your ds without the disc?

Yes, BUT, only if you have Cylco.D.s.Evolution. (Cyclo.Ds.Evolution is a game thing like what you put in the ds slot.It has over 60 games and encludes 2 movies.You can buy it for at least 400$.I DONT know where though 'cause i have it but my mom told me she got it at a place but not a specific name.)