wpf devexpress LayoutGroup

<dxdo:DockLayoutManager Grid.Column="1">
<dxdo:LayoutGroup Orientation="Horizontal" AllowDock="False" AllowFloat="False" AllowDrag="False">
<dxdo:LayoutPanel ShowRestoreButton="False" ItemHeight="*" ShowCaption="True"
Caption=" 详情"
AllowDock="False" AllowFloat="False" AllowDrag="False"
ShowBorder="True" ShowCloseButton="False" ShowPinButton="False" ItemWidth="*">
<dxdo:LayoutPanel.CaptionTemplate>
<DataTemplate>
<Grid>
<TextBlock FontSize="18" VerticalAlignment="Center" Text=" 详情"/>
</Grid>
</DataTemplate>
</dxdo:LayoutPanel.CaptionTemplate>
</dxdo:LayoutPanel>
</dxdo:LayoutGroup>
</dxdo:DockLayoutManager>