public BaoCaoThang()
{
InitializeComponent();
bllHoaDon = new bllHoaDon();
dtHoaDon = new DataTable();
dtBaoCao = new DataTable();
}
public frmDSHoaDon()
{
InitializeComponent();
bllHoaDon = new bllHoaDon();
dtHoaDon = new DataTable();
}
public HoaDon()
{
InitializeComponent();
bllLapDonDatBan = new bllLapDonDatBan();
bllNguoiDung = new bllNguoiDung();
bllKhachHang = new bllKhachHang();
bllHoaDon = new bllHoaDon();
dtDSKhachHang = new DataTable();
dtNguoiDung = new DataTable();
dtDonDatBan = new DataTable();
dtTTKhachHang = new DataTable();
dtTTDonDatBan = new DataTable();
dtTTHDMonAn = new DataTable();
dtTTHDDV = new DataTable();
}