First see all the Pokemon in The Sinnoh Dex. Then go to Sandgem Town and talk to Professor Rowan. Professor Oak will come and upgrade your Dex to National Dex.
You get the National Dex at Professor Rowan's Lab in Sandgem Town after you beat the Elite Four and Champion.
No all you have to do is SEE the first 150 Pokemon then you shall get the national dex..
The Pokemon that is number two in the National Pokedex is ivysaur.
No, you cannot see every Pokémon in the National Dex in Pokémon Diamond however you can see every Pokémon in the regional Sinnoh Dex in Pokémon Diamond.
Cheat maybe.
five stars
No, there is not a Pokedex after the National Pokedex in Pokemon Diamond Version.
you compete the sinnoh dex.
you cant get every Pokemon be4 you get the national dex
What you have to do is catch all the Pokemon from all the other regions(complete national dex.
Bulbasaur
No all you have to do is SEE the first 150 Pokemon then you shall get the national dex..
bulbasaur
You can get it in the underground after the national dex which you get after the Pokemon league
you have to see all the Pokemon in the pokedeks
I believe it is dialga
In the sinnoh dex,it is Feebas In the national dex,Omanyte
it doesnt matter with time. you just have to have seen all the Pokemon in the sinnoh dex