RichTextToolBar

The RichTextToolBar is a simple utility control that you can associate with a WPF RichTextBox to provide a familiar and attractive user interface for performing common formatting tasks. Set its RichTextBox to the control you want it to operate on:

CopyXML

<DockPanel>
  <ms:RichTextToolBar RichTextBox="{Binding ElementName=rtb}" 
                      DockPanel.Dock="Top" />
  <RichTextBox Name="rtb" />
</DockPanel>