public void OnPost(string search, List <string> mpaa, double?minIMDB) { Movies = MovieDatabase.All; if (search != null) { Movies = MovieDatabase.Search(search); } if (mpaa.Count > 0) { Movies = MovieDatabase.FilterByMPAA(Movies, mpaa); } if (minIMDB != null) { Movies = MovieDatabase.FilterByIMDB(Movies, minIMDB); } }