public ActionResult Index(string sortParam = "id")
{
var treeRoot = new TreeElement().CreateTreeFromFlatNodes(repository.TreeNodes.ToList());
switch (sortParam)
{
case "alp":
treeRoot.SortTreeNodes(e => e.Content);
break;
case "id":
treeRoot.SortTreeNodes(e => e.Id.ToString());
break;
case "childam":
treeRoot.SortTreeNodes(e => e.Children.Count.ToString());
break;
}
return(View(treeRoot));
}