public DataTable LaySachTrongPhieuMuon(string MaSach)
 {
     try
     {
         QuanLyPhieuMuonDAO Dao = new QuanLyPhieuMuonDAO();
         return(Dao.LaySachTrongPhieuMuon(MaSach));
     }
     catch (SqlException ex)
     {
         throw ex;
     }
 }
 public int CapNhatTinhTrangSach(string MaSach)
 {
     try
     {
         QuanLyPhieuMuonDAO DAO = new QuanLyPhieuMuonDAO();
         return(DAO.CapNhatTinhTrangSach(MaSach));
     }
     catch (SqlException ex)
     {
         throw ex;
     }
 }
 public int ThemChiTietPhieuMuon(CT_PhieuMuonDTO CTPM)
 {
     try
     {
         QuanLyPhieuMuonDAO DAO = new QuanLyPhieuMuonDAO();
         return(DAO.ThemChiTietPhieuMuon(CTPM));
     }
     catch (SqlException ex)
     {
         throw ex;
     }
 }
 public int ThemPhieuMuon(PhieuMuonDTO PM)
 {
     try
     {
         QuanLyPhieuMuonDAO DAO = new QuanLyPhieuMuonDAO();
         return(DAO.ThemPhieuMuon(PM));
     }
     catch (SqlException ex)
     {
         throw ex;
     }
 }
 public DataTable LayMaPhieuMuon()
 {
     try
     {
         QuanLyPhieuMuonDAO Dao = new QuanLyPhieuMuonDAO();
         return(Dao.LayMaPhieuMuon());
     }
     catch (SqlException ex)
     {
         throw ex;
     }
 }
 public DataTable LayDocGia(string MaDG)
 {
     try
     {
         QuanLyPhieuMuonDAO Dao = new QuanLyPhieuMuonDAO();
         return(Dao.LayDocGia(MaDG));
     }
     catch (SqlException ex)
     {
         throw ex;
     }
 }