Indeed, for MVC scenario, you need to extract the DataItem from the widget, regarding the current selected index. However, regarding the jquery Kendo UI, which the referenced documentation article is actually about - the dataItem is accessible trough the arguments of the event.
You can test this in the dojo, in the very same example.
In addition, we will consider adding similar example, demonstrating how to access the DataItem for MVC scenario and documentation.
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