TreeViewBaseStyle : BaseStyle
The default style of the treeview is not recommended. It should always be used by other styles in the BasicOn mode.
Case:
xml
<TreeView Width="200" VerticalAlignment="Center">
<TreeViewItem Header="111">
<TreeViewItem Header="111"/>
<TreeViewItem Header="222"/>
<TreeViewItem Header="333"/>
</TreeViewItem>
<TreeViewItem Header="222">
<TreeViewItem Header="111"/>
<TreeViewItem Header="222"/>
<TreeViewItem Header="333"/>
</TreeViewItem>
</TreeView>effect:

Related styles
| Name | Inherited from | Description |
|---|---|---|
| TreeViewItemBaseStyle | BaseStyle | Tree View Item Default Style |
| ExpandCollapseToggleStyle | Treeview Collapse Button Style | |
| TreeViewItemBaseStyle.Small | ||
| TreeView.Small |