public IActionResult AddFirstName(string firstname, int idPerso)
        {
            ViewBag.NbreVisitUnique = GetVisitIP();
            ViewBag.NbrePagesVues   = GetPageVues();


            UserConnect(ViewBag);
            ConsentCookie(ViewBag);


            PrenomPerso prenom = new PrenomPerso {
                Prenom = firstname, IdPerso = idPerso
            };
            List <PrenomPerso> prenoms = new List <PrenomPerso>();

            prenoms.Add(prenom);
            Personnage p = new Personnage {
                Id = idPerso, Prenoms = prenoms
            };

            p = p.AddPrenom();

            return(View("AddPersos", p));
        }