C# find text in .net grid Rows

    public bool OrderExists(int order_index)
    {
        foreach (GridViewRow r in gvMerchantCategories.Rows)
        {
            int ord1 = 0;
            if (int.TryParse(r.Cells[2].Text, out ord1) && ord1 == order_index)
            {
                gvMerchantCategoriesLabel.Text = "Update Not Successful, Order Index Already exists";
                gvMerchantCategoriesLabel.Style.Add("color", "#FF0000");
                return true;
            }
        }

    }