Remove GridView Row จะเช็คยังไงให้เหลืออย่างน้อย 1 record อะครับ

protected void dgvProductList2_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        getTempProdList();

        string barcode = dgvProductList2.DataKeys[e.RowIndex][0].ToString();
        string cmd = ((Button)dgvProductList2.Rows[e.RowIndex].FindControl("rowToDelete")).ToString();

        DataTable dtProduct = (DataTable)Session["dtProductList"];
        DataRowCollection drc = dtProduct.Rows;
        DataRow delRow = drc.Find(barcode);

        if (delRow != null)
        {
            drc.Remove(delRow);
        }

        Session["dtProductList"] = dtProduct;

        dgvProductList2.DataSource = Session["dtProductList"];
        dgvProductList2.DataBind();
    }