Adding MouseBindings to Items in a databound WPF ListView

Question

I'm trying to get a command in my ViewModel executed when the user clicks on a item in a ListView. When I add a ListViewItem in XAML I can just add a MouseBinding to its InputBindings.

<ListView>
<ListView.View>
   <GridView>
      <GridViewColumn Header="Test" />
   </GridView>
   </ListView.View>
   <ListViewItem Content="Item 1" >
      <ListViewItem.InputBindings>
         <MouseBinding Gesture="LeftDoubleClick" Command="{Binding DoubleClickCommand}" />
      </ListViewItem.InputBindings>
 </ListViewItem>
 </ListView>

But how can this be achived in a databound ListView?

<ListView ItemsSource="{Binding Patients}">
<ListView.View>
    <GridView>
        <GridViewColumn Header="Test" />
    </GridView>
    <!-- How to set the MouseBinding for the generated ListViewItems?? -->
</ListView.View>

I already got a solution by defining ListViewItem style and replacing the ControlTempalte of the ListViewItem. Though, I hope there is an easier solution.

Sincerely, Michael

Did you check out this post? http://stackoverflow.com/questions/1035023/firing-a-double-click-event-from-a-wpf-listview-item-using-mvvm — Brent, Jan 25 '10 at 16:17
Check out this post on social.msdn: http://social.msdn.microsoft.com/forums/en-US/wpf/thread/fb85577c-3704-492e-900c-1f0bffd1e4c2/ — Aviad P., Jan 25 '10 at 18:33

Ray Burns · Accepted Answer · 2010-03-16T09:15:41.307

5

Replacing the ControlTemplate on ListViewItem using a style is not a bad solution. In fact, it would probably be my first choice.

Another way of accomplishing the same kind is to use a custom attached property on your ListViewItem style:

<Style TargetType="ListViewItem">
  <Setter Property="local:AddToInputBinding.Binding">
    <Setter.Value>
      <MouseBinding Gesture="LeftDoubleClick" Command="{Binding DoubleClickCommand}" />    
    </Setter.Value>
  </Setter>
  ...

To do this you need to create the MyBindingHandler.AddBinding attached property:

public class AddToInputBinding
{
  public static InputBinding GetBinding(... // create using propa snippet
  public static void SetBinding(...
  public static readonly DependencyProperty BindingProperty = DependencyProperty.RegisterAttached(
    "Binding", typeof(InputBinding), typeof(AddToInputBinding), new PropertyMetadata
  {
    PropertyChangedCallback = (obj, e) =>
    {
      ((UIElement)obj).InputBindings.Add((InputBinding)e.NewValue);
    }
  }));
}

This could be expanded to handle multiple bindings, but you get the idea: This class allows you to add an InputBinding inside any style.

This solution may be preferable over what you're doing because the DoubleClick binding is defined directly on the ListBoxItem not on another control inside its template. But I think it mostly just comes down to personal preference.

edited Mar 16 '10 at 09:15

answered Jan 26 '10 at 09:06

Ray Burns

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I tried your solution but couldn't get it to work. First of all, I think GetBinding() and SetBinding() should be static (doesn't compile if they are not) and secondly, i always get the error "Cannot convert the value in attribute 'Property' to object of type 'System.Windows.DependencyProperty'." when i try to use it from within a style. It works when i don't put it inside a style. – Teodor Mar 15 '10 at 21:06
I think perhaps you didn't use the propa snippet. If you had, it would have put in the 'static' for you. Also, propa should have fixed your other problem by setting up the `DependencyProperty` correctly. Did you set the third argument to `RegisterAttached`? – Ray Burns Mar 16 '10 at 09:18
In WPF 3.5 the Command property of the MouseBinding is not a DependencyProperty, so this code snipped won't work. This is fixed in WPF 4.0 which I use atm. See: http://blogs.msdn.com/llobo/archive/2009/10/29/new-wpf-features-key-gesture-binding.aspx – Michael Menne Mar 16 '10 at 09:56
One problem with `AddToInputBinding` is that `Style`s are frozen as soon as they're applied the first time, so every `ListViewItem` gets bound to the command from the first item's viewmodel... – dlf Jul 24 '15 at 17:06

score 1 · Answer 2 · edited Feb 14 '12 at 18:57

I was able to work around this by doing the following:

1) I added a reference to the System.Windows.Interactivity DLL (found it in C:\Program Files (x86)\Microsoft SDKs\Expression\Blend\.NETFramework\v4.0\Libraries)

2) Added this to my XAML file:

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

3) Added this inside my ListView:

<ListView ...>
    <i:Interaction.Triggers>
        <i:EventTrigger EventName="MouseDoubleClick">
            <i:InvokeCommandAction Command="{x:Static local:MainWindow.RoutedCommandEditSelectedRecordWindow}" />
        </i:EventTrigger>
    </i:Interaction.Triggers>
    ...

</ListView>

Adding MouseBindings to Items in a databound WPF ListView

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