It depends on what game your talking about, but no matter what game you have you can always use an action replay.
Save the Rare Candies you get exploring during the game, and collect Poke Miles
a lot
with some AR codes.
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.
Find them in hard places or use cheats
Well there is the cheat code for 999 rare candes
You have to have the action replay DS cheats to get a lot of rare candies............
Find em or use action replay
You can get a lot of Rare Candies LEGITIMATELY by using the ability Pickup. However, there is only a 5% chance of getting a Rare Candy as opposed to some other item, so unless you have a lot of time to kill you should probably just hack the Rare Candies into your cartridge or train the Pokémon yourself.
you have to buy actionreplay and get lots of rare candies
There are five Rare Candies.
You have to train them a lot, or use Rare Candies.
put in the code for 999 rare candys in you in your action replay