private List<TreeItem<FileLayerSongDO>> BuildTree(IEnumerable<Tuple<int, List<string>>> data, int depth)
{
// wenn depth == items2.length
// break;
var grped = from r in
(from item in data
where item.Item2.Count > depth
select item)
group r by r.Item2[depth] into grp
select grp;
List<TreeItem<FileLayerSongDO>> result = null;
if (grped.Any())
{
result = new List<TreeItem<FileLayerSongDO>>();
foreach (var item in grped)
{
var child = new TreeItem<FileLayerSongDO>();
child.Level = depth;
var temp = new FileLayerSongDO();
temp.SetByDepth(depth, item.Key);
var current = item.First();
if (depth == current.Item2.Count - 1)
temp.ID = item.First().Item1;
child.Value = temp;
var childs = BuildTree(item, depth + 1);
if (childs != null)
child.SetChildren(childs);
result.Add(child);
}
}
return result;
}