RadControls for WPF
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The RadTreeView allows you to enable connected lines between the nodes of a treeview. By default the connecting lines between the nodes are not enabled (they are not visible). You should use a single property to do so - IsLineEnabled and set it to True.

CopyXAML
<telerik:RadTreeView x:Name="radTreeView" IsLineEnabled="True">
Tip
For more information about the visual structure of the RadTreeView, check out the Visual Structure topic.

Change the LineColor

Take a look at the Styling the Lines topic in the Styling and Appearance section.

See Also