How to expand all nodes of a WPF treeview in code behind?

Question

I might be suffering of Monday's dumbness, but I can't find a nice way of expanding all treeview nodes after I've added them in code behind (something like treeView.ExpandAll()).

Any quick help?

Answer 1

In xaml you could do it as follows :

 <TreeView.ItemContainerStyle>
            <Style TargetType="TreeViewItem">
                <Setter Property="TreeViewItem.IsExpanded" Value="True"/>
            </Style>
 </TreeView.ItemContainerStyle>