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POHow to data bind nested ListView ItemTemplates in Metro/WinRT?
 

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    <p>In my ViewModel I have a collection of objects which each contain another collection. I am trying to display this in my View by using nested ListView ItemTemplates. Here is a simplification of my ViewModel code:</p> <pre><code>public ViewModelObject { public ObservableCollection&lt;OuterObject&gt; OuterCollection { get; } } public OuterObject { public string OuterTitle; public ObservableCollection&lt;InnerObject&gt; InnerCollection { get; } } public InnerObject { public string InnerTitle; } </code></pre> <p>And here is a simplification of how I'm trying to use this ViewModel in my XAML:</p> <pre><code>&lt;ListView ItemsSource="{Binding OuterCollection}"&gt; &lt;ListView.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;StackPanel&gt; &lt;TextBlock Text="{Binding OuterTitle}"/&gt; &lt;ListView ItemsSource="{Binding InnerCollection}"&gt; &lt;ListView.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;TextBlock Text="{Binding InnerTitle}"/&gt; &lt;/DataTemplate&gt; &lt;/ListView.ItemTemplate&gt; &lt;/ListView&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;/ListView.ItemTemplate&gt; &lt;/ListView&gt; </code></pre> <p>If I remove the inner ListView, the outer ListView binding works perfectly fine. I just can't figure out how to properly bind the inner collection object to the inner ListView. I've tried doing the inner binding with <code>{Binding OuterCollection.InnerCollection}</code>, <code>{Binding DataContext.InnerCollection}</code>, and <code>{Binding RelativeSource={RelativeSource TemplatedParent}, Path=InnerCollection}</code>, but all of these cause it to crash. What is the proper way to achieve this nested binding?</p> <p><strong>EDIT:</strong> I should add that this is for an application being ported from Windows Phone 7, and it is an attempt to find a replacement for <code>LongListSelector</code>, which is not available in WinRT.</p>
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