WPF Extended Toolkit Control in Custom Control not pulling through to form?
<p>I am using the Xceed Extended WPF Toolkit for the Integer Up Down Control. I have installed this via Nuget.</p>

<p>I have the integrated into a custom control which contains other normal textboxes and button etc. </p>

<p>This custom control I then put in a tab control on a Window. Everything shows correctly apart from this IntegerUpDown which shows as an empty box. (It is fine when looking at the custom control in design) </p>

<p>I have added the namespace to both the control and window so am not sure what the problem is. Everything is inside one project so I don't think references are a problem. </p>

<p>Any ideas of what I could be missing?</p>

<p>Control XAML:</p>

<pre><code>&lt;Label Grid.Row="3" Content="Quantity of Tickets:" VerticalAlignment="Center"&gt;&lt;/Label&gt;
&lt;xctk:IntegerUpDown Grid.Row="3" Grid.Column="1" Name="numTickets"&gt;&lt;/xctk:IntegerUpDown&gt;
</code></pre>

<p>Form XAML:</p>

<pre><code>&lt;TabItem Header="New Booking"&gt;
      &lt;Grid Background="#FFE5E5E5"&gt;
           &lt;btc:NewBooking&gt;&lt;/btc:NewBooking&gt;
      &lt;/Grid&gt;
 &lt;/TabItem&gt;
</code></pre>

<p>Thanks,
Ryan</p>