RadTreeViewItem Level and StyleSelector

[David]

I'm using a StyleSelector to set the style of the different Items in my  RadTreeView, and I noticed that, when the item is analyzed by the StyleSelector to choose a style, i.e. at the SelectStyle method, the Level of the container is not set. Is this by design or a bug?

If by design, where is it documented? The functionality I'm trying to implement is expanding everything up to the fourth level of my tree view, how can I do this without using the Level property in the Style selector?

[David]

Just figured out I'll use the ItemPrepared event to handle the Level issue, but I'd still like to know where is this issue documented or why is it not documented.

[Petar Mladenov]

Hello David ,

 Yes this is by design, the Level property is set later than the SelectStyle method. I believe we haven't documented this because we have never received a reported that this might be an issue in particular scenarios. Could you please elaborate more on yours? If expanding particular nodes is your main goal, this is usually achieved with databinding. The RadTreeView is bound to collection of ViewModels and a boolean property from the ViewModel class is bound to the IsExpanded property of the RadTreeViewItem via StyleBindings(WPF 4, SL5) or ContainerBindings(SL4).

Greetings,
Petar Mladenov
the Telerik team