How to get RadPanes in a RadPaneGroup to stack vertically?

[toddhd]

I have some XAML that looks like this:

<telerik:RadSplitContainer InitialPosition="DockedLeft">
    <telerik:RadPaneGroup>
        <telerik:RadPane Header="Environment Explorer" IsSelected="True" HeaderTemplate="{StaticResource EnvironmentExplorerTemplate}">
            <telerik:RadTreeView x:Name="treeEnvironments" ItemTemplate="{StaticResource RISEnvironment}" />
        </telerik:RadPane>
        <telerik:RadPane Header="Properties" HeaderTemplate="{StaticResource PropertyTemplate}">
            <my:PropertyGrid />
        </telerik:RadPane>
    </telerik:RadPaneGroup>
</telerik:RadSplitContainer>

This creates a group, docked to the left, with overlapping RadPanes, like this:
Overlapping RadPanes

What I want however is to have the RadPanes "stacked", like this:
Stacked RadPanes

How do write the XAML so that the RadPanes are stacked initially?

[Konstantina]

Hello Todd,

You can achieve this arrangement by setting the Orientation property of the SplitContainer to Vertical. For more information about arranging the SplitContainers you can refer to this help article:
http://www.telerik.com/help/silverlight/raddocking-features-split-container.html

Please let us know if you have any other questions.

Sincerely yours,
Konstantina
the Telerik team