Using a ContainerBindingCollection in a Telerik RadTreeView in Silverlight

<telerikControls:HierarchicalDataTemplate x:Key="MyItemsTemplate"

telerikControls:ContainerBinding.ContainerBindings="{StaticResource SelectedItemBinding}">

<Border Opacity="{Binding Opacity}" >

<Grid>

</Border>

</telerikControls:HierarchicalDataTemplate>

And your RadTreeView looks like this, referring to the items template described above:

Inside your ViewModel for your item (the data context of the item in your view, and not the data context for your treeview collection), you would have the property:

private bool isSelected;
public bool IsSelected
{
get { return isSelected; }
set
{
isSelected = value;
RaisPropertyChanged(this, "IsSelected");
}
}