Telerik Silverlight RadTreeview AutoRefresh

In my application I am using the Telerik Silverlight RadTreeView control. This is populated with hierarchical, load on demand data.

My view refreshes every 60 seconds and I want to maintain the expanded nodes, the selected item and the scroll postion.

What is the simplest way to achiev开发者_如何学Pythone this?

Any help much appreciated. Thanks, Mark

A good suggestion from Telerik is to add ContainerBindings along with your HierarchicalData

I think this needs a little polishing - maybe extension methods or some inheritance, but is pretty much the right way to go.