How to make a treeView node move?

Question

Branches need to move the node to a higher level in the parent and lower in the child.

My tree:

<TreeView x:Name="tw_tree" dd:DragDrop.IsDragSource="True" dd:DragDrop.IsDropTarget="True" > <TreeView.ItemTemplate> <HierarchicalDataTemplate ItemsSource="{Binding collection_node, ConverterParameter=name_, Converter={StaticResource MySortConverter}}">

On another example, it works fine, but not in mine.

 1 -2 --3 4 -5 --6

I can move any node to the root or to the same node in which it is located. For example, 3 can be moved to the root or to 2, where it already exists.

To others for some reason does not move.

 public class Node { public string name_ { get; set; } public ObservableCollection<Node> collection_node { get; set; } public Node() { collection_node = new ObservableCollection<Node>(); } }

Sorry, did not notice the label, just recently dealt with a similar question.
Found a working example on WPF code.msdn.microsoft.com/windowsdesktop/…

user227049 · Accepted Answer · 2017-01-01T21:49:33

I recommend using the GongSolutions.WPF.DragDrop , which can be easily installed by adding the appropriate NuGet package.

Further to your TreeView simply add two properties:

 <TreeView dd:DragDrop.IsDragSource="True" dd:DragDrop.IsDropTarget="True" ... >

where dd :

 xmlns:dd="clr-namespace:GongSolutions.Wpf.DragDrop;assembly=GongSolutions.Wpf.DragDrop"

Now you can easily drag and drop items:

Do not you move between levels using this package or in the project should be able to drag only one level?
I can't reproduce the problem, I need a compiled example that I can run and find the cause of the wrong behavior

How to make a treeView node move?

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