While RadCarousel for WPF internally uses the data engine that RadGridView uses, and the data engine supports hierarchical relationships, we have not added that feature for the carousel component. The short answer is no, we do not support that feature.
We have always looked at RadCarousel as a navigation component, and displaying hierarchical data inside has never been high on our feature list. Can you describe your application scenario, so that I get a better idea of what you are trying to achieve. I am always looking to gain new insight on how customers use our components as that can change our product development direction.
Thanks for helping us improve our product.
the Telerik team
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