C#递归树

 1 protected void Page_Load(object sender, EventArgs e)
 2 {
 3 bindtree(PopId);
 4 }
 5 private void bindtree()
 6 {
 7 TreeView1.Nodes.Clear();
 8 AddTree(0, (TreeNode)null);
 9 }
10 public void AddTree(int ParentID, TreeNode pNode)
11 {
12 DataTable dt = new DataTable();
13 //数据源
14 dt = logbll.BindPop();
15 DataView dvTree = new DataView(dt);
16 //过滤ParentID,得到当前的所有子节点
17 dvTree.RowFilter = "flid = " + ParentID;
18
19 foreach (DataRowView Row in dvTree)
20 {
21 TreeNode Node = new TreeNode();
22 if (pNode == null)
23 { //添加根节点
24 Node.Text = Row["PopName"].ToString();
25 TreeView1.Nodes.Add(Node);
26 //Node.Expanded = true;
27
28 AddTree(Int32.Parse(Row["PopId"].ToString()), Node); //再次递归
29 }
30 else
31 { //添加当前节点的子节点
32 Node.Text = Row["PopName"].ToString();
33 Node.NavigateUrl = Row["PostUrl"].ToString();
34 pNode.ChildNodes.Add(Node);
35 //Node.Expanded = true;
36 AddTree(Int32.Parse(Row["PopId"].ToString()), Node); //再次递归
37 }
38 }
39 }