public void OnPost()
 {
     Movies = MovieDatabase.All;
     if (search != null)
     {
         Movies = MovieDatabase.Search(Movies, search);
     }
     if (mpaa.Count != 0)
     {
         Movies = MovieDatabase.FilterByMPAA(Movies, mpaa);
     }
     if (minIMBD != null)
     {
         Movies = MovieDatabase.FilterByMinIMBD(Movies, (float)minIMBD);
     }
     if (maxIMBD != null)
     {
         Movies = MovieDatabase.FilterByMaxIMBD(Movies, (float)maxIMBD);
     }
 }