RadLayoutControl and the layout groups are ordering their children with a horizontal orientation by default. You can change this and arrange the child items in a vertical order by setting the control's Orientation property to Vertical.
The property is an enumeration of type System.Windows.Controls.Orientation and exposes the following values:
- Horizontal: The layout will be oriented horizontally.
- Vertical: The layout will be oriented vertically.
[XAML] Example 1: Setting the Orientation property of RadLayoutControl
[XAML] Example 2: Setting the Orientation property of LayoutControlGroup
Figure 1: Horizontal and Vertical orientations
The Orientation property doesn't affect the LayoutControlTabGroup.