ASPxComboBox cbxRelation = new ASPxComboBox() { Width = 50, HorizontalAlign = HorizontalAlign.Center, CssClass = "dynLabel" };
                            var lstOp = new List<Tuple<string, string>>();
                            lstOp.Add(new Tuple<string, string>(">", ">"));
                            lstOp.Add(new Tuple<string, string>("<", "<"));
                            lstOp.Add(new Tuple<string, string>(">=", ">="));
                            lstOp.Add(new Tuple<string, string>("<=", "<="));
                            cell.Controls.Add(cbxRelation);
                            cbxRelation.DataSource = lstOp;
                            cbxRelation.TextField = "item2";
                            cbxRelation.ValueField = "item1";
                            cbxRelation.Enabled = true;
                            cbxRelation.DataBind();
                            //cbxRelation.SelectedIndex = 3;

                            ASPxTextBox drpNumber = new ASPxTextBox();
                            cell.Controls.Add(drpNumber);