private void bbiSua_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            var ma = gbList.GetFocusedRowCellValue(colMa_Nhom_Hang);
            if (ma == null)
                return;

            NhomHang_Them_Sua frm = new NhomHang_Them_Sua(ma.ToString());
            frm.Reload += frm_Reload;
            frm.ShowDialog();
        }
 private void bbiThem_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
 {
     NhomHang_Them_Sua frm = new NhomHang_Them_Sua();
     frm.Reload += frm_Reload;
     frm.ShowDialog();
 }