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PObinding a command inside a listbox item to a property on the viewmodel parent
 

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    <p>I've been working on this for about an hour and looked at all related SO questions.</p> <p>My problem is very simple:</p> <p>I have HomePageVieModel:</p> <pre><code>HomePageVieModel +IList&lt;NewsItem&gt; AllNewsItems +ICommand OpenNews </code></pre> <p>My markup:</p> <pre><code>&lt;Window DataContext="{Binding HomePageViewModel../&gt; &lt;ListBox ItemsSource="{Binding Path=AllNewsItems}"&gt; &lt;ListBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;StackPanel&gt; &lt;TextBlock&gt; &lt;Hyperlink Command="{Binding Path=OpenNews}"&gt; &lt;TextBlock Text="{Binding Path=NewsContent}" /&gt; &lt;/Hyperlink&gt; &lt;/TextBlock&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;/ListBox.ItemTemplate&gt; </code></pre> <p>The list shows fine with all the items, but for the life of me whatever I try for the Command won't work:</p> <pre><code>&lt;Hyperlink Command="{Binding Path=OpenNewsItem, RelativeSource={RelativeSource AncestorType=vm:HomePageViewModel, AncestorLevel=1}}"&gt; &lt;Hyperlink Command="{Binding Path=OpenNewsItem, RelativeSource={RelativeSource AncestorType=vm:HomePageViewModel,**Mode=FindAncestor}**}"&gt; &lt;Hyperlink Command="{Binding Path=OpenNewsItem, RelativeSource={RelativeSource AncestorType=vm:HomePageViewModel,**Mode=TemplatedParent}**}"&gt; </code></pre> <p>I just always get :</p> <blockquote>System.Windows.Data Error: 4 : Cannot find source for binding with reference .....</blockquote> <p><strong>Update</strong> I am setting my ViewModel like this? Didn't think this would matter:</p> <pre><code> &lt;Window.DataContext&gt; &lt;Binding Path="HomePage" Source="{StaticResource Locator}"/&gt; &lt;/Window.DataContext&gt; </code></pre> <p>I use the ViewModelLocator class from the MVVMLight toolkit which does the magic.</p>
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