Fight strong opponents and have your Pokemon hold lucky egg.
Trade your Pokemon then use the traded Pokemon to gain boosted experience points plus have it hold lucky egg to gain maximum experience points.
Answer: No you don't gain experience points, when you are battling with your friends ds, the only time you are going to get experience points in the Pokemon series is battling wild Pokemon and battling against trainers, gym leaders etc.
How many steps you walk while the Pokemon are in the day care determines how many experience points they gain. For every step you walk, each Pokemon will gain 1 experience point, I think.
If a pokemon ceases to gain experience points; either it's because it's at level 100, you are using a flashcard and downloaded a rough patch where your pokemon cannot gain exp. points(this has happened to me), you faint the pokemon during battle, you are playing online, it doesn't participate in battle, or it can simply be a glitch.
Make them fight in battles to gain EXP (experience points). Once they get enough, they'll level up.
Effort values in the Pokemon games are base stats that give bonus points to an individual Pokemon's stats depending on what kind of Pokemon they defeat to gain experience from. After a Pokemon reaches level 100, it may still gain Effort Value points up to 65535 in each stat.
You train them by battling other trainers or wild Pokemon. You gain EXP, or experience points, for defeating other Pokemon. After a certain amount of EXP are met, your Pokemon will gain a level.
As Pokemon battle, they gain experience. With enought experience, they will gain levels, which helps them learn moves.
You gain 2 experience points if you win a fight and 1 if you lose a fight.
i don't think you can train Pokemon over lvl 100... my darkrai is lvl 100 and when i fight with him, he doesn't gain qany experience points :P
Keep fighting to gain experience points.
Keep fighting and training with them. Find wild Pokemon and random trainers, and kick their butts. Your Pokemon will gain experience points this way and continue to level up. Once they reach a certain level, they will evolve.