<UserControl 
    x:Class="ICSharpCode.XamlDesigner.EnumBar"
    xmlns="http://schemas.microsoft.com/netfx/2007/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <StackPanel x:Name="uxPanel"
                Orientation="Horizontal" />
</UserControl>