title: WPF ReactiveUI ComboBox Binding
body: <p>I have a WPF ComboBox bound to a ReactiveList and a registered view for a model <code>(IViewFor&lt;MyModel&gt;)</code>, so it correctly shows the list when the combobox is opened. </p>
  
  <p>The problem is that the selected value is not shown in the combobox when it is closed.</p>
  
  <p><strong>XAML</strong></p>
  
  <pre><code>&lt;DockPanel&gt;
      &lt;ComboBox x:Name="SourceSystemDatabases" /&gt;
  &lt;/DockPanel&gt;
  </code></pre>
  
  <p><strong>Binding</strong></p>
  
  <pre><code>this.OneWayBind(ViewModel, vm =&gt; vm.SourceDatabases, view =&gt; view.SourceSystemDatabases.ItemsSource);
  </code></pre>
  
  <p><strong>Opened combobox</strong></p>
  
  <p><a href="https://i.stack.imgur.com/ukWq3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ukWq3.png" alt="Opened combobox"></a></p>
  
  <p><strong>Closed combobox with no text</strong></p>
  
  <p><a href="https://i.stack.imgur.com/KAs5B.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KAs5B.png" alt="closed combobox with no next"></a></p>