public frm_TraSach()
{
InitializeComponent();
phieuPhatDTO = new PhieuPhat_DTO();
phieuPhatBUS = new PhieuPhat_BUS();
phieuTraBUS = new PhieuTra_BUS();
phieuTraDTO = new PhieuTra_DTO();
ctTraSachBUS = new ChiTietTraSach_BUS();
ctTraSachDTO = new ChiTietTraSach_DTO();
}
