r.a.d.combobox fully supports templates. You can embed any content inside a r.a.d.combobox template, including HTML markup and ASP.NET server controls, as well as other third party controls (and actually any control from the telerik r.a.d.controls suite as well). The syntax is very similar to what you're used to from the default DataGrid control. If you do not specify an ItemTemplate, all r.a.d.combobox items are rendered using their Text property as plain text. If you specify <ItemTemplate>, then the respective template is used for rendering.