title: How to add multiple user controls to Accordion in xaml
body: <p>I'm using a Silverlight 4 page with an Accordion to which I'm trying to insert 2 user controls to each Accordion item.</p>
  
  <pre><code>&lt;toolkit:Accordion Name="accordion1"&gt;
      &lt;toolkit:AccordionItem Content="item 1" Header="A"&gt;
          &lt;local:AddRemoveControl x:Name="AddRemoveAgents" Margin="470,90,0,0"&gt;     &lt;/local:AddRemoveControl&gt;
      &lt;/toolkit:AccordionItem&gt;
      &lt;toolkit:AccordionItem Content="item 2" Header="B -  long header"&gt;
          &lt;local:DatesFilter x:Name="DatesFilter" Margin="475,200,0,0" Canvas.Top="76"&gt; &lt;/local:DatesFilter&gt;
      &lt;/toolkit:AccordionItem&gt;
  &lt;/toolkit:Accordion&gt;
  </code></pre>
  
  <p>I'm getting the following error message: "The property content is set more than once"</p>
  
  <p>How can I proceed?</p>
  
  <p>Thank you!</p>