How to display a flat list as a tree in DataGrid or TreeView(WPF, C#)?

Question

WPF

There is a table. It contains records of the form
ID, Name, FK
where FK points to another record in the same table.
I am using Entity Framework. The table is loaded into an ObservableCollection, for a working binding.
I can’t figure out yet how to display it as a tree in a DataGrid or in a TreeView, and in order to save the binding (do not leave the ObservableCollection that I get from the DataContext).
Maybe someone did, tell me where to dig, or maybe give an example?
Thanks

Answer 1

<TreeView ItemsSource="{Binding СвойствоОбщейВьюМоделиСодержащееКоллекциюЗаписей}">
    <TreeView.ItemTemplate>
        <HierarchicalDataTemplate ItemsSource="{Binding СвойствоОбъектаСсылающеесяНаОбъектРодитель}" DataType="{x:Type local:КлассОбъекта}">
            <TreeViewItem Header="{Binding СвойствоВОбъектеСТекстомДляОтображенияВУзле}"/>
        </HierarchicalDataTemplate>
    </TreeView.ItemTemplate>
</TreeView>

Don't forget to add a description for the local namespace.