you have to trade or use an action replay
You can't catch Dialga in Pokemon Pearl. You'll need to trade for it.
You can't catch Dialga in Pokemon Black. You need to trade for it or transfer it from the older Pokemon DS games.
on what version? In pokemon platinum
you cannot catch prime Dialga, only normal Dialga!
You catch it at the top of snow point city.
you have to catch dialga on spear piller first
Dialga and Palkia are legendary Pokémon. It is not possible to catch them in Pokémon Leaf Green version or in Fire Red version.
You can only catch dialga in dimonid
If you beat Dialga and Dialga faints, you can no longer catch it.
catch Dialga and Palkia this is incorrect, you finish the game when you have completed both pokedex + nationaldex.
Sorry to say, but no, you cannot catch a Palkia on Diamond version. You catch a Dialga on diamond, and Palkia on pearl. You would have to trade to get one.
its is dialga