public DataSet SearchBooks(SearchBookDTO dto)
 {
     return sbDAO.SearchBooks(dto);
 }
 public SearchBookBUS(SearchBookDTO dto, SearchBookDAO dao)
 {
     sbDTO = dto;
     sbDAO = dao;
 }
 public SearchBookBUS()
 {
     sbDAO = new SearchBookDAO();
     sbDTO = new SearchBookDTO();
 }
 public DataSet SearchBooks(SearchBookDTO sbDTO)
 {
     return new DataSet();
 }
 public SearchBookDAO(SearchBookDTO dto)
 {
     sbDIO = dto;
 }
 public SearchBookDAO()
 {
     sbDIO = new SearchBookDTO();
 }