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I have a treeview bound to collection of objects using MVVM. However, i need to expand all the nodes of the treeview by default.
Tried using style:
<Style TargetType="TreeViewItem">
<Setter Property="IsExpanded" Value="True"/>
</Style>
But that does not work..
That style works for me, where did you place it?
You might want to assign it explicitly as the
TreeView‘sItemContainerStyle.