title: Extended WPF Toolkit - using the RichTextBoxFormatBar
body: <p>I've been trying to use the Extended WPF Toolkit so that I can make use of the RichTextBoxFormatBar but I seem to be going round in cirlces. Despite trying several examples on here and other sites I keep getting the same error messages:</p>
  
  <p><code>The attachable property 'FormatBar' was not found in type 'RichTextBoxFormatBarManager'.</code></p>
  
  <p><code>The type 'toolkit:RichTextBoxFormatBar' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.</code></p>
  
  <p>I'm new to WPF so I'm know it's something I'm not picking up on rather than a bug, can anyone tell me what I'm doing wrong and save my sanity?</p>
  
  <p><code>&lt;UserControl x:Class="TestWPF_Richtextbox.UserControl1"
               xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
               xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
               xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
               xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
               xmlns:toolkit="http://schemas.xceed.com/wpf/xaml/toolkit"
               mc:Ignorable="d" 
               d:DesignHeight="300" d:DesignWidth="300"&gt;
      &lt;Grid&gt;
          &lt;RichTextBox&gt;
              &lt;toolkit:RichTextBoxFormatBarManager.FormatBar&gt;
                  &lt;toolkit:RichTextBoxFormatBar /&gt;
              &lt;/toolkit:RichTextBoxFormatBarManager.FormatBar&gt;
          &lt;/RichTextBox&gt;
      &lt;/Grid&gt;
  &lt;/UserControl&gt;</code></p>
  
  <p>EDIT: Both the library and the project are .Net 4. The version of the WPFToolkit.Extended.dll is V.1.6.0.0.</p>