title: Windows Phone 8, remove the Header of each PivotItem
body: <p>I struggled with this problem for hours.  I want to use the control Pivot as a Pager in Windows Phone, so I want to remove the Header of each PivotItem.  What I have done is to create a DataTemplage for the Pivot's HeaderTemplate, as below:</p>
  
  <pre><code>&lt;DataTemplate x:Name="DataTemplateScrollTestItemHeader" 
                    x:Key="DataTemplateScrollTestItemHeader"&gt;
          &lt;TextBlock
              Height="0"
              Width="0"
              Margin="0,0,0,0"
              Padding="0,0,0,0"
              Text=""/&gt;
  &lt;/DataTemplate&gt;
  </code></pre>
  
  <p>In code, I set the HeaderTemplate to this DataTemplate:</p>
  
  <pre><code>PivotTestType.HeaderTemplate = DataTemplateScrollTestItemHeader;
  </code></pre>
  
  <p>What happened is the header text is disappeared, but the header still occupied some space.  I have read this：
  <a href="https://stackoverflow.com/questions/19139001/windows-phone-8-remove-pivot-header">Windows Phone 8: remove pivot header</a>
  But it's the same with my method.  It can't remove the space of the Header.
  Anyone know how to handle this?  </p>