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copied!<p>The solution is to use Commands.</p> <p>Since its a UserControl you may manipulate it to implement ICommandSource interface.</p> <p>Then your UserControl will be able to bind a Command to ViewModel.</p> <p>Once the event is being fired you simply call the command which will invoke Execute() method from the ViewModel.</p> <p>For commanding in WPF I suggest you to read following link:</p> <p><a href="http://msdn.microsoft.com/en-us/library/ms752308(v=vs.110).aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/ms752308(v=vs.110).aspx</a></p> <p>In your ViewModel you will have to offer a property of type ICommand.</p> <p><strong>EDIT</strong> Since you cannot manipulate your UserControl you will have to attach a command on it in XAML.</p> <p>Interactivity is also an alternative to solve your issue. Take a look at this code:</p> <pre><code> xmlns:I="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" <ListBox ...> <i:Interaction.Triggers> <i:EventTrigger EventName="SelectionChanged"> <i:InvokeCommandAction Command="{Binding SelectedItemChangedCommand}"/> </i:EventTrigger> </i:Interaction.Triggers> </ListBox> </code></pre> <p>Interactivity is a third party dll from Microsoft Blend.</p> <p>If you have nuget in visual studio you will be able to find that dll. If not here is the link: <a href="http://www.nuget.org/packages/System.Windows.Interactivity.WPF/" rel="nofollow">http://www.nuget.org/packages/System.Windows.Interactivity.WPF/</a></p>

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