ASP.NET下的TreeView控件的使用（生成树与统计所有子节点数量）

 View Code  1 //GetAllNodeText(trvPlacement.Nodes);  //统计TreeView所有子节点数量
 2 
 3     private void GetAllNodeText(TreeNodeCollection tnc)  //统计TreeView所有子节点数量
 4     {
 5         foreach (TreeNode node in tnc)
 6         {
 7             if (node.ChildNodes.Count != 0)
 8             {
 9                 GetAllNodeText(node.ChildNodes);
10             }
11             node.Text = node.Text + GetNodesCount(node); 
12         }
13     }
14 
15     private int GetNodesCount(TreeNode tnc)  //统计TreeView节点下所有子节点数量
16     {
17         int intCount = tnc.ChildNodes.Count;
18         if (tnc.ChildNodes.Count > 0)
19         {
20             foreach (TreeNode node in tnc.ChildNodes)
21             {
22                 intCount = intCount + GetNodesCount(node);
23             }
24         }
25         return intCount;
26     }
27 
28     private void InitTree(TreeNode Nd, String Parent_id) //子树节点加载函数
29     {
30         DataRow[] rows = dtbUserAllInfo.Select("Parent=" + Parent_id);
31         if (rows != null)
32         {
33             for (int i = 0; i < rows.Length; i++)
34             {
35                 TreeNode Tnd = new TreeNode();
36                 DataRow dr = rows[i];
37                 Tnd.Text = dr["Name"].ToString();
38 
39                 intPeopleNum += 1;
40                 Nd.ChildNodes.Add(Tnd);
41                 InitTree(Tnd, dr["ID"].ToString());//递归调用
42             }
43         }
44     }