private void rdTrangThai_SelectedIndexChanged(object sender, EventArgs e)
        {
            try
            {
                if (DesignMode || LicenseManager.UsageMode == LicenseUsageMode.Designtime)
                {
                    return;
                }

                int cindex = grvGiamSatXe.FocusedRowHandle;
                int tindex = grvGiamSatXe.TopRowIndex;

                SetTrangThai();
                if (txtSoHieu.Text.Trim() == "" || txtSoHieu.Text.Trim() == "Số xe")
                {
                    grcGiamSatXe.DataSource = lienlac.GetGiamSatXeByTrangThai(TrangThai).ToDataTableEnVang("SoHieuXe");
                }
                else
                {
                    grcGiamSatXe.DataSource = lienlac.GetGiamSatXe(txtSoHieu.Text, TrangThai).ToDataTableEnVang("SoHieuXe");
                }
                grvGiamSatXe.FocusedRowHandle = cindex;
                grvGiamSatXe.TopRowIndex      = tindex;
                grcGiamSatXe.Update();
            }
            catch (Exception ex)
            {
                LogError.WriteLogError("rdTrangThai_SelectedIndexChanged", ex);
            }
        }