<% Html.Obout(new ComboBox("ComboBox1")
    {   
        EmptyText = "Select a country ...",
        HeaderTemplate = new OboutMvcTemplate<ComboBoxHeaderTemplateContainerInfo>((info) =>
        {%>
            CONTINENTS
        <%}),
        Detail = new ComboBox("ComboBox2") {
            EmptyText="Select a country ...",
            EnableLoadOnDemand = true,
            OnLoadingItems = "ComboBox/LoadCountries",
            HeaderTemplate = new OboutMvcTemplate<ComboBoxHeaderTemplateContainerInfo>((info) =>
            {%>
                COUNTRIES
            <%})
        }
    }); %> 
    
    

    @Html.Obout(new ComboBox("ComboBox1")
    {   
        EmptyText = "Select a country ...",
        HeaderTemplate = new OboutMvcTemplate<ComboBoxHeaderTemplateContainerInfo>(
            @:CONTINENTS
        ),
        Detail = new ComboBox("ComboBox2") {
            EmptyText="Select a country ...",
            EnableLoadOnDemand = true,
            OnLoadingItems = "ComboBox/LoadCountries",
            HeaderTemplate = new OboutMvcTemplate<ComboBoxHeaderTemplateContainerInfo>(
                @:COUNTRIES
            )
        }
    })
    
    

    public JsonResult LoadCountries(ComboBoxLoadingItemsEventArgs args)
    {
        ComboBoxItemList items = GetFilteredCountries(args.Text);

        JsonResult result = new JsonResult
        {
            Data = new
            {
                Items = items
            },
            JsonRequestBehavior = JsonRequestBehavior.AllowGet
        };

        return result;
    }