[Solved] PanelBar Hierarchy

[erick]

is the method to bind to hierarchy model change?
because the snippet from the Help not working

there's no "For" method :(..

@(Html.Telerik().PanelBar()
        .Name("PanelBar")
        .HtmlAttributes(new { style = "width: 300px;" })
        .BindTo(Model, mappings =>
        {
            mappings.For<Category>(binding => binding
                    .ItemDataBound((item, category) =>
                    {
                        item.Text = category.CategoryName;
                    })
                    .Children(category => category.Products));
            mappings.For<Product>(binding => binding
                    .ItemDataBound((item, product) =>
                    {
                        item.Text = product.ProductName;
                    }));
        })
)

[erick]

found the solution

just paste along the code and change it eventhough the intellisense don't show up :(
learn it for 2 days hard way :((