public ActionResult Index(string stageid, string dateid)
{
var model = LineUpRepository.GetLineUp(stageid, dateid);
ViewBag.StageID = new SelectList(StageRepository.GetStages(), "ID", "Name");
ViewBag.DateID = new SelectList(FestivaldagRepository.GetFestivaldagen(), "ID", "Date");
return(View(model));
}