WPF Listview Access to SelectedItem and subitems

Question

Ok, I am having more problems with my C# WPF ListView control. Here it is in all its glory:

Answer 1

Just wanted to be more clear with the code

Getting selected item

XAML:

CS:

private void TheList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    MyItemClass SelectedItem = (MyItemClass)TheList.SelectedItem;

    if (SelectedItem != null)
        MessageBox.Show(SelectedItem.Title);
}

And for double clicking item (almost the same)

XAML:

CS:

private void TheList_SelectionChanged(object sender, MouseButtonEventArgs e)
{
    MyItemClass SelectedItem = (MyItemClass)TheList.SelectedItem;

    if (SelectedItem != null)
        MessageBox.Show(SelectedItem.Title);
}