How to get Selected Node in TreeView without Code Behind using MVVM pattern?

Question

I want to Bind to ViewModel the selected Node of the Treeview , notice that every node is a NavPoint (from the EPUB's Table Of Content) , How create a dependency property "SelectedNode" on Control that Binds the Selected Node in the correct Type . I used

<TextBlock Text="{Binding SelectedItem ,ElementName=myTreeview}"/>

but i want to bind it to my MainWindowViewModel.cs class to manipulate it and make some changes over it !

Use behaviour OR extend TreeView like provided in answers to the linked question. — Rohit Vats, Aug 15 '14 at 09:15

score 0 · Answer 1 · answered Aug 15 '14 at 09:08

0

If you handle the TreeView.SelectedItemChanged Event, then you could update your SelectedNode property:

private void SelectionChanged(object sender, RoutedPropertyChangedEventArgs<Object> e)
{
    YourSelectedNodeProperty = (TreeViewItem)e.NewValue;
}

answered Aug 15 '14 at 09:08

Sheridan

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I think the question is using MVVM pattern. this works but I hope someone can shed light on how to do this using MVVM – Rob Jul 12 '18 at 09:51
@Rob, to use this method with MVVM, simply wrap this event in an Attached Property. I have documented an example of this in my answer to the [What's the best way to pass event to ViewModel?](https://stackoverflow.com/questions/21285577/whats-the-best-way-to-pass-event-to-viewmodel/21285863#21285863) question, here on Stack Overflow. – Sheridan Aug 13 '18 at 16:15

How to get Selected Node in TreeView without Code Behind using MVVM pattern?

1 Answers1