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    <p>Not able to get an idea of what the expected output should be ? Can you draw the tree and post it. </p> <p>You may have to create a wrapper VM type for the domain type you want to present. say.. MasterPartVM. You can now define a property with the logic for the 2 routes e.g. Children. Your hierararchical data template will always expand the next level using this property. </p> <p>This will put the onus of finding the right children on your implementation of MasterPartVM.Children - which you seem to have nailed down. Let me know if I have misunderstood the problem.. </p> <p>e.g. In the linked post, you can see that I used a wrapper property to combine Subgroups and Entries to collate a single list.</p> <p>Here's another example</p> <pre><code>public class MyPart { public string Name { get; set; } public bool IsRoot { get; set; } public string[] ChildNames { get; set; } public IList&lt;MyPart&gt; Children { get { if (IsRoot) return ChildNames.Select(c =&gt; new MyPart { Name = c, ChildNames =new[]{c} }).ToList(); else return new List&lt;MyPart&gt;{new MyPart { Name = "No more children" }}; } } } MyPartsCollection = new ObservableCollection&lt;MyPart&gt;(); MyPartsCollection.Add(new MyPart { Name = "Root1", IsRoot = true, ChildNames = new []{"Item1", "Item2", "Item3"} }); </code></pre> <pre><code>&lt;TreeView ItemsSource="{Binding MyPartsCollection}"&gt; &lt;TreeView.ItemTemplate&gt; &lt;HierarchicalDataTemplate DataType="{x:Type local:MyPart}" ItemsSource="{Binding Children}"&gt; &lt;TextBlock Text="{Binding Name}" /&gt; &lt;/HierarchicalDataTemplate&gt; &lt;/TreeView.ItemTemplate&gt; &lt;/TreeView&gt; </code></pre>
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    1. POHierarchicalDataTemplate and Many-To-Many with Payload Entities Navigation Binding Issue
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    1. COI completely rewrote this after thinking about what you said, and what the root of my problem is after looking through the debugger. The problem is that I can't see the difference between what I have the potential to bind to (my fully functioning hierarchical `ObservableCollection`), and what the `HierarchicalDataTemplate` is actually binding to.
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    2. COdo you know all the ways HierarchicalDataTemplate understands when to create a new branch?
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    3. CO@UB3571 - Check to see if you can see any Binding errors in the Output window. Also check to see if the return type of your ItemsSource property has the return type as the one that your hierarchical data template knows how to render. Finally try creating a similar toy example (without the Entity framework) - this will help you nail down a working hieararchical data template first. If you see issues again when using the real code, your problem lies somewhere else.. not in presentation.
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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.

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