public static IEnumerable <TreeListViewItem> EnumerateItems(this TreeListView tv,
Func <TreeListViewItem, bool> walkChildren)
{
foreach (var item in tv.Items)
{
var tvi = (TreeListViewItem)tv.ItemContainerGenerator.ContainerFromItem(item);
if (tvi != null)
{
yield return(tvi);
if (walkChildren(tvi))
{
foreach (var sub in EnumerateChildren(tvi, walkChildren))
{
yield return(sub);
}
}
}
}
}
public static IEnumerable <TreeListViewItem> EnumerateItems(this TreeListView tv)
{
return(EnumerateItems(tv, item => true));
}