title: WPF Binding.Stringformat ignored
body: <p>With .NET 3.5 SP 1 I checked out <a href="http://blogs.msdn.com/llobo/archive/2008/05/19/wpf-3-5-sp1-feature-stringformat.aspx" rel="nofollow noreferrer">this blog</a> and followed instructions, however the <code>StringFormat</code> parameter still gets ignored.
  Any possible reasons?
  <strong>To be sure: the datatype that are involved are DateTime, double, int. So the formatting SHOULD work, but it's not.</strong>
  Any clues why?</p>
  
  <p>EDIT: here's the code!</p>
  
  <pre><code>&lt;Label Content="{Binding Path=TotalHours, StringFormat=Total hours: {}{0:00}}"/&gt;
  </code></pre>