title: How Binding Index in Xaml when index name contain "[ ]" Special Characters
body: <p>I Write DateTemplate Binding Index, like this</p>
  
  <pre><code>&lt;DataTemplate x:Key="VisitorCellTemplate"&gt;
       &lt;TextBlock Text="{Binding [[GroupName].[ItemName]]}"/&gt;
  &lt;/DataTemplate&gt;
  </code></pre>
  
  <p><strong>[GroupName].[ItemName]</strong> is index key.</p>
  
  <p>I try write </p>
  
  <blockquote>
    <p>{Binding ['[Measures].[Visits]']}</p>
  </blockquote>
  
  <p>but not able building.</p>
  
  <p>Help Me! Thanks!!</p>