<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:r="clr-namespace:Microsoft.Windows.Controls.Ribbon;assembly=RibbonCo" & _
      "trolsLibrary"
    Title="Window1" Height="300" Width="300">
    <DockPanel>
        <r:Ribbon DockPanel.Dock="Top">
            <r:RibbonTab Label="Home">
                <r:RibbonGroup>
 
                </r:RibbonGroup>
            </r:RibbonTab>
        </r:Ribbon>
    </DockPanel>
</Window>