protected void btnAddRatio_Click(object sender, System.EventArgs e)
        {
            try
            {
                string ratioType    = Request.Form[this.UniqueID + ":selRatioType"];
                string ratioHier    = Request.Form[this.UniqueID + ":selRatioDim"];
                string ratioMeasure = Request.Form[this.UniqueID + ":selRatioMeasure"];
                _contr.AddRatioMeasure(ratioType, ratioHier, ratioMeasure);

                _report.SaveState();
            }
            catch (Exception exc)
            {
                ((PageBase)this.Page).ShowException(exc);
            }
        }