Question

<ListBox>
   <ListBox.ItemTemplate>
      <DataTemplate>
        <Button Content="Click Me"
                Click="OnClick"
                Name="btn"/>
      </DataTemplate>
   </ListBox.ItemTemplate></ListBox>

I want to get relevant ListBoxItem when I Click the Button.how to do this ?

private void OnClick(object sender, RoutedEventArgs e){// How to get ListBoxItem?}

Answer 1

You can do this using Linq-to-VisualTree as follows:

Button btn = sender as Button;
ListBoxItem item = btn.Ancestors<ListBoxItem>().Cast<ListBoxItem>().First();

This finds the first ancestor of the button that is of the desired type.

As an alternative, if you are using databinding, you could inspect the inherited DataContext of the Button to see which model item it is bound to. That would be my first preference.