<ribbon:RibbonSplitButton ToolTipDescription="{Resx Ribbon.StandDisplayGroup.ToolTip}"
ToolTipTitle="{Resx Ribbon.StandDisplayGroup.ToolTipTitle}"
KeyTip="DG"
Label="{Resx Ribbon.DisplayGroup}"
Name="DisplayGroupButton"
LargeImageSource="pack://application:,,,/ResourcesClient.Modules.Stand;component/Resources/Images/selectresourcegroup32.png">
<ribbon:RibbonApplicationMenuItem Header="All" />
<ribbon:RibbonApplicationMenuItem IsChecked="True"
Header="Stand Group 1" />
<ribbon:RibbonApplicationMenuItem IsChecked="True"
Header="Stand Group 2" />
<ribbon:RibbonApplicationMenuItem Header="Stand Group 3" />
</ribbon:RibbonSplitButton>