How to capture a mouse click on an Item in a ListBox in WPF?

Question

I want to get notified when an item in a ListBox gets clicked by the mouse, whether it is already selected or not.

I searched and found this: (http://kevin-berridge.

Answer 1

There is also another way - to handle PreviewMouseDown event and check if it was triggered by the list item:

In XAML:

In codebehind:

private void PlaceholdersListBox_OnPreviewMouseDown(object sender, MouseButtonEventArgs e)
{
    var item = ItemsControl.ContainerFromElement(sender as ListBox, e.OriginalSource as DependencyObject) as ListBoxItem;
    if (item != null)
    {
        // ListBox item clicked - do some cool things here
    }
}

Was inspired by this answer, but it uses listbox by name, I propose to use sender argument to avoid unnecessary dependencies.