private void btn_AddBefore_Click(object sender, RoutedEventArgs e)
{
// validar datos
string item = tB_ItemToAdd.Text;
int index = lV_Items.SelectedIndex;
if (string.IsNullOrEmpty(item))
{
return;
}
if (index < 0 || index > list.Size())
{
return;
}
Node <string> node = list.AtIndex(index);
// realizar operacion
list.AddBefore(node, item);
CUtilities.FillListView(lV_Items, list);
}