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Enable the Horizontal and Vertical Scrollbars

For example, you may have the following treeview:

<telerik:RadTreeView x:Name="radTreeView">
    <telerik:RadTreeViewItem Header="Sport Categories">
        <telerik:RadTreeViewItem Header="Football">
            <telerik:RadTreeViewItem Header="Futsal"/>
            <telerik:RadTreeViewItem Header="Soccer"/>
        </telerik:RadTreeViewItem>
        <telerik:RadTreeViewItem Header="Tennis"/>
        <telerik:RadTreeViewItem Header="Cycling"/>
    </telerik:RadTreeViewItem>
</telerik:RadTreeView>


In order to enable horizontal and/or vertical scrollbar you need to add the following attribute(s) to the RadTreeView declaration:

<telerik:RadTreeView x:Name="radTreeView" ScrollViewer.HorizontalScrollBarVisibility="Visible" ScrollViewer.VerticalScrollBarVisibility="Visible">

And here is the result:

The same operation can be done in the code-behind:

private void EnableScrollBars()
{
    ScrollViewer.SetHorizontalScrollBarVisibility( radTreeView, ScrollBarVisibility.Visible );
    ScrollViewer.SetVerticalScrollBarVisibility( radTreeView, ScrollBarVisibility.Visible );
}
Private Sub EnableScrollBars()
    ScrollViewer.SetHorizontalScrollBarVisibility(radTreeView, ScrollBarVisibility.Visible)
    ScrollViewer.SetVerticalScrollBarVisibility(radTreeView, ScrollBarVisibility.Visible)
End Sub

If you want to enable the scrollbars on demand, you need to set the scrollbars visibility to Auto:

<telerik:RadTreeView x:Name="radTreeView" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto">

private void EnableScrollBars()
{
    ScrollViewer.SetHorizontalScrollBarVisibility( radTreeView, ScrollBarVisibility.Auto );
    ScrollViewer.SetVerticalScrollBarVisibility( radTreeView, ScrollBarVisibility.Auto );
}
Private Sub EnableScrollBars()
    ScrollViewer.SetHorizontalScrollBarVisibility(radTreeView, ScrollBarVisibility.Auto)
    ScrollViewer.SetVerticalScrollBarVisibility(radTreeView, ScrollBarVisibility.Auto)
End Sub

See Also

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