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    <p>The tricky part of this solution is having to deal with two collections underneath each node and TreeView's HierarchicalDataTemplate only supports binding to a single ItemsSource.</p> <p>One option is to create a ViewModel that merges the collections into a single class that represents an entry in the TreeView that you can then bind to inside your HierarchicalDataTemplate.</p> <p>First I created my ViewModel class:</p> <pre><code>public class TreeViewEntry { public string Name { get; set; } public IEnumerable&lt;TreeViewEntry&gt; Children { get; set; } public object Model { get; set; } } </code></pre> <p>Then I used a function, some Linq and some recursion to pull all the objects into a single collection:</p> <pre><code>private IEnumerable&lt;TreeViewEntry&gt; OrganizationsToTreeViewEntries(IEnumerable&lt;Organization&gt; orgs) { return (from o in orgs select new TreeViewEntry { Name = o.Name, Model = o, Children = (from u in o.Users select new TreeViewEntry { Name = u.Name, Model = u } ).Concat(OrganizationsToTreeViewEntries(o.Children)) }); } public MainPage() { InitializeComponent(); var items = OrganizationsToTreeViewEntries(existingOrganizationData); OrgTree.ItemsSource = items; } </code></pre> <p>Now that I have a merged ItemsSource it's easy to style my HierarchicalDataTemplate:</p> <pre><code>&lt;UserControl.Resources&gt; &lt;common:HierarchicalDataTemplate x:Key="OrgTemplate" ItemsSource="{Binding Children}"&gt; &lt;StackPanel&gt; &lt;TextBlock Text="{Binding Name}" /&gt; &lt;/StackPanel&gt; &lt;/common:HierarchicalDataTemplate&gt; &lt;/UserControl.Resources&gt; &lt;Grid x:Name="LayoutRoot" DataContext="{Binding Source={StaticResource SampleDataSource}}"&gt; &lt;controls:TreeView x:Name="OrgTree" HorizontalAlignment="Left" Margin="8,8,0,8" Width="225" ItemTemplate="{StaticResource OrgTemplate}" /&gt; &lt;/Grid&gt; </code></pre> <p>You can use a ValueConverter to tweaks things like FontWeight if you want to adjust the visual style of certains elements (for example in my testing I created a ValueConverter on FontWeight that was bound to the Model property of TreeViewEntry).</p>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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