public ActionResult Index(int id = 0)
{
if (id < 0)
{
throw new HttpException(404, "Could not find the requested page. Pagination number can't be negative !");
}
var lastProblems = _problemRepository.All(id);
var nbProblems = _problemRepository.Count();
return(View(new ProblemListModel
{
Problems = lastProblems,
CurrentPage = id,
NbProblemsTotal = nbProblems
}));
}