public IEnumerable<object> Render(PanelItem panelItem) { var dropDownList = new DropDownList { ID = panelItem.GetId(), Enabled = panelItem.Editable, Width = new Unit(panelItem.Width, UnitType.Ex), Visible = panelItem.Visible }; dropDownList .AddStyle(CssClass.Item) .AttachToolTip(panelItem) .ToggleStyle(panelItem.Editable, CssClass.Editable, CssClass.ReadOnly); panelItem.Target = dropDownList; return new List<Control> { dropDownList, PanelValidator.Create(panelItem) }; }