private TreeViewItem getTree(Kriterium objekt)
{
List <Kriterium> unterkriterien = objekt.getUnterKriterium(db);
TreeViewItem tree = new TreeViewItem();
List <TreeViewItem> branch = new List <TreeViewItem>();
TreeViewItem temp_item = new TreeViewItem();
foreach (Kriterium temp_objekt in unterkriterien)
{
tree.Header = objekt.ToString();
branch.Add(getTree(temp_objekt));
}
if (unterkriterien.Count == 0)
{
tree.Header = objekt.ToString();
}
tree.ItemsSource = branch;
return(tree);
}