递归为TreeView控件添加节点

private void BindTreeNode(string cityNo, TreeNodeCollection nodes,int level){ IEnumerable<AreaTInfo> CityList = areaList.Where(ati => ati.F_AreaSN == cityNo); foreach (AreaTInfo ati in CityList) { TreeNode tn = new TreeNode(ati.AreaName); tn.Tag = ati.AreaSN; int templevel = level+1; BindTreeNode(ati.AreaSN, tn.Nodes,level); if (level == 0) { tn.Expand(); } nodes.Add(tn); }}