asp.net treeview load expanded and keep selection

 

                TreeNode newNode = new TreeNode();
                string title=string.Format("{0};{1};{2};{3}", row["Field1"], row["Field2"], row["Field3"], row["Field4"]);
                newNode.Text=string.Format("<input type='hidden' value='{0}'><span title='{0}' onclick='return false;'>{1}</span>;",title,Bezeichnung);
                string val=string.Format("{0}",row["NameGroupID"]);
                newNode.Value =val;
                newNode.Checked=stored.Contains(val);
                newNode.Expand();
                ProduktbereichNode.ChildNodes.Add(newNode);

more...