title: Parent Property Binding
body: <p>Have a ViewModel with two properties: Venue and States
  Venue is the current view that is selected and being displayed via a form (below):</p>
  
  <pre><code>&lt;StackPanel Orientation="Vertical" Margin="20,00,0,0" FlowDirection="LeftToRight" DataContext="{Binding Venue}"&gt;
              &lt;TextBlock Text="Venue Name" Style="{StaticResource FormHeading}" /&gt;
              &lt;TextBox x:Name="txtVenueName" Width="200" MaxLength="70" HorizontalAlignment="Left" Text="{Binding VenueName, Mode=TwoWay}" /&gt;
  
              &lt;TextBlock Text="Address" Style="{StaticResource FormHeading}" /&gt;
              &lt;TextBox x:Name="txtAddress" Width="300" MaxLength="100" HorizontalAlignment="Left" Text="{Binding Address, Mode=TwoWay}" /&gt;
  
              &lt;TextBlock Text="City" Style="{StaticResource FormHeading}" /&gt;
              &lt;TextBox x:Name="txtCity" Width="200" MaxLength="100" HorizontalAlignment="Left" Text="{Binding City, Mode=TwoWay}" /&gt;
  
              &lt;TextBlock Text="State" Style="{StaticResource FormHeading}" /&gt;
              &lt;ComboBox Width="70" HorizontalAlignment="Left" Name="cmbState" DisplayMemberPath="FullName"
                        ItemsSource="{Binding Path=States, ElementName=LayoutRoot}"/&gt;
  
              &lt;TextBlock Text="Zipcode" Style="{StaticResource FormHeading}" /&gt;
              &lt;TextBox x:Name="txtZipCode" Width="50" MaxLength="5" HorizontalAlignment="Left" Text="{Binding Zipcode, Mode=TwoWay}" /&gt;
  
              &lt;StackPanel Orientation="Horizontal" Margin="0,10,0,0"&gt;
                  &lt;TextBlock Text="Active?" Style="{StaticResource FormHeading}" Margin="0,0,10,0"  /&gt;
                  &lt;CheckBox Name="chkActive" /&gt;
              &lt;/StackPanel&gt;
          &lt;/StackPanel&gt;
  </code></pre>
  
  <p>States is not a member of Venue, however, but it is a property at the same level as Venue. How can I bind to this property? Looked at RelativeSource, doesnt seem to be quite what I am looking for.</p>
  
  <p>Thanks</p>