May be this helps you.
<ListBox x:Name="lstBoxTemp" Hold="lstBoxTemp_Hold">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
.......
........
Your template
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
private void lstBoxTemp_Hold(object sender, System.Windows.Input.GestureEventArgs e)
{
var item= (Cast as YourType)(sender as ListBox).DataContext;
}