Question

I am using MouseBindings in the style of my ListBoxItem.

<MouseBinding MouseAction="LeftClick" Command="{Binding    
DataContext.ViewWorkingImprovementAssetCommand}" CommandParameter="{Binding}"/>

Specifically, I am using the LeftClick command to fire a command in the view model. The issue is the item does not getting selected in the ListBox because the mouse event is not getting to the list box. So is there a way to pass the event to the parent control (ListBox)?

I can get this thing to work if I use an interaction trigger on the ListBox for SelectionChanged, but the problem is re-clicking an already selected item won’t fire the event as the name suggests. And when my list only has one item that poses a problem.

<i:Interaction.Triggers>
    <i:EventTrigger EventName="SelectionChanged">
         <i:InvokeCommandAction Command="{Binding ViewWorkingImprovementAssetCommand}" 
                                CommandParameter="{Binding ElementName=RemovedImprovementAssetsListBox, Path=SelectedItem}" />
    </i:EventTrigger>
</i:Interaction.Triggers>

Any ideas?

Answer 1

Apparently MouseBinding steals the event and won’t pass it through. I solved it using AttachedBehaviors that we already had in our solution. I think taken from this http://marlongrech.wordpress.com/2008/12/13/attachedcommandbehavior-v2-aka-acb/

Final Code solution

<cmd:CommandBehaviorCollection.Behaviors>
<cmd:BehaviorBinding Event="MouseLeftButtonDown" 
                    Command="{Binding  RelativeSource={RelativeSource FindAncestor,  AncestorType=UserControl, AncestorLevel=1}, Path=DataContext.ViewWorkingImprovementAssetCommand}" 
                    CommandParameter="{Binding}"/>
</cmd:CommandBehaviorCollection.Behaviors>