you can't
no
you cant only if you have icheat or action replay
that's not possible
That is impossible in Pokemon Platinum, but you can get a ton, by working a lot. At the battle area, you can get rewarded with Rare Candies.
cant
You cant the action replay does not work with the dsi
Without an AR, cheating in that game is borderline impossible. So I'd say you can't.
Get an action replay from a game store.
action replay dude p.s. for gameboy
you have to use an action replay and use the rare candy hack
buy them
go to golden city radio tower for a few rare candies but i don't think without cheating.