You have to give two compatible Pokemon to the Day Care Woman in Solaceon Town. Then walk around for awhile while displaying the Breeding Centre Checker App (#9) on the Poketch. You can refresh the display by tapping on it and after walking around for a bit, you will get notice an egg appear. When this happens, talk to the Day Care Man standing outside the Day Care and you will get an egg. Make sure you have an empty space in your party though.
you get the manaphy egg in Pokemon rangers and send it into Pokemon diamond or pearl
You get a togepi egg in Pokemon Platinum, not Diamond.
Have two Nintendo DS one have the Pokemon Ranger and one with the Pokemon Diamond. Then go to check egg. Then you have it.
Happiny
It is not possible to get a Lugia egg in Pokemon Diamond. It is generally impossible to get an egg of a Legendary Pokemon the only exceptions being Manaphy and Phione.
Manaphy is obtainable in Pokemon Diamond if you also have a copy of Pokemon Ranger. The game Pokemon Ranger is able to communicate with Pokemon versions; Diamond, Pearl, Platinum, HeartGold and SoulSilver to transfer a Manaphy Egg to them. This Egg can be hatched like any other Pokemon Egg.
you cant unfourtanately
happiny
It's Happini.
You must breed a Monferno or Infernape with a Pokemon to get the chimchar egg.
Riolu is 4 generation Pokemon. You can get egg only in Pokemon Diamond and Pearl
_michael houle