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    <p>It doesn't work because you have tried to <code>Bind</code> the <code>Command</code> to the <code>ItemsControl</code> and not the <code>Button</code> controls. Have you tried this?:</p> <pre><code>&lt;DataTemplate&gt; &lt;Button Content="{Binding}" Command="{Binding DataContext.ZoomToAddressCommand, RelativeSource={RelativeSource AncestorType={x:Type YourViewNamespace:YourViewName}}}" /&gt; &lt;/DataTemplate&gt; </code></pre> <p>What we're attempting to do here is to <code>Bind</code> from the <code>DataTemplate</code> to the view model that I am assuming is set as the <code>DataContext</code> of the current view. Please replace "<code>YourViewNamespace:YourViewName</code>" with the actual names of your XML namespace and view.</p> <p>UPDATE >>></p> <p>Ok, after looking at your code again, I can see that you are <code>Binding</code> to the <code>Addresses</code> collection simply using the property name. You say that the <code>DataContext</code> is set on the <code>ItemsControl</code>, so I'm assuming that by that you mean that your view model is set on the <code>ItemsControl.DataContext</code> property. If that is so, then we need to change our <code>Binding</code> to the <code>Command</code> like this:</p> <pre><code>&lt;DataTemplate&gt; &lt;Button Content="{Binding}" Command="{Binding DataContext.ZoomToAddressCommand, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}" /&gt; &lt;/DataTemplate&gt; </code></pre> <p>If your view model is not set on the <code>ItemsControl.DataContext</code> property, then this will not work and you will need to clearly tell me how you have connected your view model to your view. Before I just assumed that your view model was data bound to the <code>DataContext</code> of the containing view or <code>Window</code> as is normally done... maybe next time, you can provide this information in your question to make it easier for people to answer it?</p> <p>UPDATE 2 >>></p> <p>Ok, you've updated the question with the essential <code>DataContext</code> information... perfect. Now I can answer your question properly without all the guessing... do you see how much easier this would have been if you had added that there in the first place? No matter... we're here now. Try this final example:</p> <pre><code>&lt;DataTemplate&gt; &lt;Button Content="{Binding}" Command="{Binding DataContext.ZoomToAddressCommand, RelativeSource={RelativeSource AncestorType={x:Type TabItem}}}" /&gt; &lt;/DataTemplate&gt; </code></pre> <p>To reiterate... this <code>RelativeSource Binding</code> will look up the visual tree until it finds a <code>TabItem</code> control. Then, it will look at the <code>DataContext</code> property of that control. Finally, it will look for a <code>ZoomToAddressCommand</code> property in the object (your view model) that is set as the <code>DataContext</code> of the <code>TabItem</code>... and there we are.</p>
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    1. POBinding a Button to a RelayCommand within an ItemsControl container
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    1. COI removed the i:Interation.Triggers section underneath my ItemsControl and bound it the way you illustrated and the RelayCommand Property breakpoint does not hit now and the method does not get called
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    2. COAlso, the datacontext that is being set in the Xaml constructor is on the ItemsControl Parent (A TabItem). Do I need to change the RelativeSource?
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    3. COI actually am binding the datacontext one level higher.. I wish I had more time to program in WPF using MVVM, but this is kind of a one off project..
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