Hi Ben Boger,
ContainerBindnigs are only available for Silverlight. Their purpose is to workaround the missing Bindings in Style Setter. So you don't need them in WPF.
If you want to enable/disable RadMenuItems you could use ItemContainerStyle property and set the following setter:
Where IsMenuItemEnabled is a property on your data item.
We will update this article. Thanks for pointing it out.
Kind regards,
Hristo
the Telerik team
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