Design View of a DataTemplate in a ResourceDictionary in Visual Studio

Is there a way to preview GUI in a DataTemplate? e.g. if I have a Resource Dictionary, containing a DataTemplate, and the Data template contains GUI code, like

<DataTemplate x:Key="MyTemplate">
    <StackPanel>
        <TextBox Text="AAA"/>
    </StackPanel>
</DataTemplate>

Can I view just the stackpanel? (like previewing a UserControl in design view). If not possible with original VS, is there a plugin for that?