override protected Boolean LoadData()
    {
        try
        {
            string productNC    = Utils.convertToUnSign2(sProductCN.Value);
            int    ProductCatID = int.Parse(sProductCat.Value);

            RadGrid1.DataSource = tData.USP_Product_Search(productNC, ProductCatID);
            RadGrid1.DataBind();

            return(true);
        }
        catch (Exception ex)
        {
            ShowErrorMes("Lỗi hệ thống: " + ex.Message);
            return(false);
        }
    }