Help... RadPanel with Listbox

[figueiredorj]

Hi.
I am trying to achieve something that is giving me such a headache...

I would like to set a collection of items that have a collection of items.
The top items I do believe that the best representation would be RadPanel.
For the sub collection I would like to set it as a List.

Take the example classes:

I have a collection let's say Fleets; and each Fleet would have a collection of Vehicles;
So radpanel collection is binded to Fleets;
Each item template would be a listbox of vehicles.

I have been trying to accomplish this but with no success until now. Could some one aid me on this? 
By the way, I am using PRISM and MVVM if it matters...

[Zarko]

Hi Figueiredorj,
In order to achieve this you'll need to use the HierarchicalDataTemplate. You can read more about it here.
For further references could you please examine the attached project and if you have more questions feel free to ask.

Regards,
Zarko
the Telerik team

[figueiredorj]

Thanks Zarko.
Actually I had already figured it out but It could be a further reference to someone else...