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    copied!<p>I like using the Prism framework, however I feel that their Regions should only be used for Application Layout (<code>MenuRegion</code>, <code>NavigationRegion</code>, <code>ContentRegion</code>, etc), and not Navigation. Using them for Navigation means letting the View control the application flow, and I feel that is a job for the ViewModels.</p> <p>My preferred method for displaying changing content is with DataTemplates and ContentControls</p> <p>To create something like you outlined, I would have a parent ViewModel which contains</p> <ul> <li><code>ObservableCollection&lt;IPageViewModel&gt; PageViewModels</code></li> <li><code>IPageViewModel SelectedPageViewModel</code></li> </ul> <p>The area I wanted to display the dynamic content would use a ContentControl such as this:</p> <pre><code>&lt;ContentControl Content="{Binding SelectedPage" /&gt; </code></pre> <p>And DataTemplates would be used to tell WPF how to draw each section</p> <pre><code>&lt;DataTemplate TargetType="{x:Type local:Page1ViewModel}"&gt; &lt;local:Page1View /&gt; &lt;/DataTemplate&gt; &lt;DataTemplate TargetType="{x:Type local:Page2ViewModel}"&gt; &lt;local:Page2View /&gt; &lt;/DataTemplate&gt; &lt;DataTemplate TargetType="{x:Type local:Page3ViewModel}"&gt; &lt;local:Page3View /&gt; &lt;/DataTemplate&gt; </code></pre> <p>I have not used a RibbonBar before, however it sounds like it should allow for an ItemsSource so your final XAML should probably look something similar to this:</p> <pre><code>&lt;Window&gt; &lt;Grid&gt; &lt;DockPanel&gt; &lt;RibbonBar ItemsSource="{Binding PageViewModels}" SelectedItem="{Binding SelectedPageViewModel}" DockPanel.Dock="Top" ...&gt; &lt;/RibbonBar&gt; &lt;StackPanel&gt; &lt;Grid&gt; ... Generic Content &lt;/Grid&gt; &lt;ContentControl Content="{Binding SelectedPageViewModel}"&gt; &lt;ContentControl.Resources&gt; &lt;DataTemplate TargetType="{x:Type local:Page1ViewModel}"&gt; &lt;local:Page1View /&gt; &lt;/DataTemplate&gt; &lt;DataTemplate TargetType="{x:Type local:Page2ViewModel}"&gt; &lt;local:Page2View /&gt; &lt;/DataTemplate&gt; &lt;DataTemplate TargetType="{x:Type local:Page3ViewModel}"&gt; &lt;local:Page3View /&gt; &lt;/DataTemplate&gt; &lt;/ContentControl.Resources&gt; &lt;/ContentControl&gt; &lt;/StackPanel&gt; &lt;/DockPanel&gt; &lt;/Grid&gt; &lt;/Window&gt; </code></pre>
 

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