title: Checking if a Data Binding Exists
body: <p>I am dynamically loading a xaml file into my program that has a binding:</p>
  
  <pre><code>&lt;ListView
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      Grid.Row="2" BorderBrush="White" Name="ListView1"
      ItemsSource="{Binding Path=line}" HorizontalAlignment="Stretch"&gt;
      &lt;ListView.View&gt;
          &lt;GridView&gt;
              &lt;GridViewColumn Header="Lines"
               DisplayMemberBinding="{Binding Path=aline}" /&gt;
          &lt;/GridView&gt;
      &lt;/ListView.View&gt;
  &lt;/ListView &gt;
  </code></pre>
  
  <p>In my program, I want to check if the Binding exists.</p>
  
  <p>How should this be achieved?</p>
  
  <p><strong>Edit:</strong> The <code>aline</code> is a property of the <code>DataContext</code> object</p>