wpf listview right-click problem

Question

so I have attached a context menu (right-click menu) to a wpf listview.

unfortunately, when you right-click it brings up both the menu and selects whatever item you are over. Is there a way to shut off this right-click select behavior while still allowing the context menu?

Answer 1

You must play with both the PreviewRightMouseDown and PreviewRightMouseUp events. Here is the XAML that achieves what you desire with the code behind given below:

<ListBox PreviewMouseRightButtonUp="ListBox_PreviewMouseRightButtonUp"
         PreviewMouseRightButtonDown="ListBox_PreviewMouseRightButtonDown">
    <ListBox.ContextMenu>
        <ContextMenu x:Name="contextMenu">
            <MenuItem Header="Test 1" />
            <MenuItem Header="Test 2" />
        </ContextMenu>
    </ListBox.ContextMenu>
    <ListBoxItem>Test 1</ListBoxItem>
</ListBox>

Code behind:

private void ListBox_PreviewMouseRightButtonUp(object sender, MouseButtonEventArgs e)
{
    // a better version would turn the sender into the ListBoxItem
    // find the list box, then find the ContextMenu that way
    this.contextMenu.PlacementTarget = sender as UIElement;
    this.contextMenu.IsOpen = true;
}

private void ListBox_PreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
    // disables the SelectedIndex code
    e.Handled = true;
}

Answer 2

The key is setting the PreviewMouseRightButtonDown event in the correct place. As you'll notice, even without a ContextMenu right clicking on a ListViewItem will select that item, and so we need to set the event on each item, not on the ListView.

<ListView>
 <ListView.ItemContainerStyle>
  <Style TargetType="{x:Type ListViewItem}">
   <EventSetter Event="PreviewMouseRightButtonDown"
       Handler="OnListViewItemPreviewMouseRightButtonDown" />
  </Style>
 </ListView.ItemContainerStyle>
 <ListView.ContextMenu>
  <ContextMenu>
   <MenuItem Header="Menu Item">Item 1</MenuItem>
   <MenuItem Header="Menu Item">Item 2</MenuItem>
  </ContextMenu>
 </ListView.ContextMenu>
 <ListViewItem>Item</ListViewItem>
 <ListViewItem>Item</ListViewItem>
 <ListViewItem>Item</ListViewItem>
 <ListViewItem>Item</ListViewItem>
 <ListViewItem>Item</ListViewItem>
 <ListViewItem>Item</ListViewItem>
</ListView>

private void OnListViewItemPreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
 Trace.WriteLine("Preview MouseRightButtonDown");

 e.Handled = true;
}

Since the preview events are tunneling this will block the RightMouseButtonDown from occurring on the ListViewItems preventing them from being selected, but not prevent the RightMouseButtonDown on the ListView and so still allow the ContextMenu to open.

Answer 3

this link also seems helpful:

http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/e7f213e3-d8c0-4d13-8c39-51b214715c8a