Good day.

How in wpf to implement the output of disks and folders in the form in the picture (attached to the question). How is this element called in XAML?

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1 answer 1

Called TreeView. There is some good stuff here .
If you are interested in more functional solutions, I can advise the component from Telerik - RadTreeView , it supports virtualization.

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    In Telerik, I liked the price of $ 999 for a set for WPF - Bulson