//wishlist bestaat nog niet, dus ook niet de items waar number of persons in staat public ActionResult AddItemToSesWishlist(int numberOfpersones, int activityId) { Activities activity = wishListRepo.GetWholeActivity(activityId); if (activity == null) { ViewBag.errors = "Kon activiteit niet vinden"; return(View("Index", GetActivitiesFromSession())); } else { AddActivityToSesWishlist(numberOfpersones, activity); } return(View("Index", GetActivitiesFromSession())); }