private void TonChiTiet_Click(object sender, EventArgs e)
        {
            BangGiaBanChiTietBCInfor bgInfor = (BangGiaBanChiTietBCInfor)gvListSanPham.GetFocusedRow();

            if (bgInfor != null)
            {
                frmBH_BangGiaBanHang_TonCTiet frm = new frmBH_BangGiaBanHang_TonCTiet(bgInfor);
                frm.ShowDialog();
            }
        }
        private void TonChiTiet_Click(object sender, EventArgs e)
        {
            SanPhamKhongCoGiaBCInfor sp      = (SanPhamKhongCoGiaBCInfor)gvListSanPham.GetFocusedRow();
            BangGiaBanChiTietBCInfor bgInfor = new BangGiaBanChiTietBCInfor()
            {
                IdSanPham    = sp.IdSanPham,
                MaSanPham    = sp.MaSanPham,
                TenSanPham   = sp.TenSanPham,
                MaDonViTinh  = sp.MaDonViTinh,
                TenDonViTinh = sp.TenSanPham
            };

            if (bgInfor != null)
            {
                frmBH_BangGiaBanHang_TonCTiet frm = new frmBH_BangGiaBanHang_TonCTiet(bgInfor);
                frm.ShowDialog();
            }
        }