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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