title: An exception of type 'System.ArgumentException' occurred in Microsoft.Phone.ni.dll but was not handled in user code
body: <p>am trying to navigate from 1 page to other in windows phone8 mobile app.
  its giving error-
  An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in System.Windows.ni.dll</p>
  
  <p>Additional information: Exception has been thrown by the target of an invocation.</p>
  
  <p>XAML:</p>
  
  <pre><code>&lt;phone:PivotItem Header="item1"&gt;
      &lt;Grid&gt;
          &lt;StackPanel&gt;
              &lt;HyperlinkButton Content="Transfer" Click="hyperlinkButton1_Click" /&gt;
          &lt;/StackPanel&gt;
      &lt;/Grid&gt;
  &lt;/phone:PivotItem&gt;
  </code></pre>
  
  <p>C# Code:</p>
  
  <pre><code>private void hyperlinkButton1_Click(object sender, RoutedEventArgs e)
  {
      //NavigationService.Navigate(new Uri("/AboutUs.xaml", UriKind.Relative));               
  
      //NavigationService.Navigate(new Uri("/AboutUs.xaml", UriKind.Relative));
      Dispatcher.BeginInvoke(() =&gt;
      {
          this.NavigationService.Navigate(new Uri("/AboutUs.xaml", UriKind.Relative));
      });
  }
  </code></pre>