public void Evolution(int index, Pokemon evolution)
 {
     if (IndexValide(index))
     {
         PokemonsAchetes.RemoveAt(index);
         PokemonsAchetes.Insert(index, evolution);
     }
 }
 public int ChercherIndexDePokemonAchete(Guid idPokemonAchete)
 {
     return(PokemonsAchetes.FindIndex(p => p.IdPokemonAchete.Equals(idPokemonAchete)));
 }