递归生成treeView有关问题_.NET Framework

递归生成treeView问题
有一个递归，教我一下怎么写，我有一个表，现在要建一个treeNode，现在要自动生成，表里有两字段，一个是id 一个是nodeID，只要某条数据nodeID等于某条数据id那么，这个数据是那个数据的子节点，我知道应该要递归算法，现在没有头绪

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C# code

private void InitTree(TreeNodeCollection Nds,int parentid)        {            DataView dv = new DataView();            TreeNode tmpNd = null;            dv.Table = ds.Tables[0];            dv.RowFilter = String.Format("parentid={0}", parentid);            foreach (DataRowView drv in dv)            {                tmpNd = new TreeNode();                tmpNd.Text = (string)drv["sortname"];//节点名称                tmpNd.NavigateUrl = String.Format("?id={0}", drv["id"]);//节点URL                //tmpNd.ImageUrl = ""; //节点图片                if (parentid == 0)                    tmpNd.Expanded = true;                else                    tmpNd.Expanded = false;                Nds.Add(tmpNd);                InitTree(Nds[Nds.Count - 1].ChildNodes, (int)drv["id"]);            }        }
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C# code        /// <summary>        /// 动态加载步骤序号        /// </summary>        private void CreateTreeNode()        {            CommonExecute comm = new CommonExecute(m_ConnectionString);            string strCondition = string.Format("planinfono='{0}'", m_strCondition[0].Trim());            DataSet ds = null;            int count = 0;            if (comm.GetInfosDataSetByCondition("emergenceprocess", strCondition, "processno asc", out ds) == true)///////            {                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)                {                    TreeNode root = new TreeNode();                    if (!string.IsNullOrEmpty(ds.Tables[0].Rows[i]["processno"].ToString().Trim()))                    {                        count++;                        TreeNode[] childNode = new TreeNode[4];                        root.Text = ds.Tables[0].Rows[i]["processno"].ToString();                        treeView1.Nodes.Add(root.Text, "步骤" + count);                                            }                }            }        }
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C# code//写一段伪代码吧private void InitTree(){   TreeNode root = new TreeNode("测试树");   root.Name = "root";   //root.Tag   root.ImageKey   ...   this.TreeView1.Nodes.Add(root);   DataTable dt = new DataTable();   //dt = ....,设有部门和职员    for(int r = 0; r < dt.Rows.Count; r++)    {        TreeNode pNode = new TreeNode(dt.Rows[r]["Dep"].ToString());        //pNode.Tag   pNode.ImageKey        AddChildNode(root,pNode);        //    }}prrivate void AddChildNode(TreeNode pNode,TreeNode childNode){    pNode.Nodes.Add(childNode);    //.......    //TreeNode cNode = new TreeNode();    //AddChildNode(childNode,cNode);}
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 /// <summary>
       /// TreeView和移动List递归添加子节点--nhapis
        /// </summary>
       /// <param name="node">TreeView</param>
       /// <param name="tsi">MoveList</param>
       /// <param name="nodeID">节点名称</param>
       protected void TreeViewAndMoveList_AddChildNodes(TreeNode node, ToolStripMenuItem tsi, string nodeID)
       {
           DataSet ds = listBll.getDataSet(" list_group = '" + nodeID + "'");
           DataView dv = ds.Tables[0].DefaultView;

           foreach (DataRowView row in dv)
           {
               string unitName = row["list_nm"].ToString().Trim();
               string unitID = row["LIST_CONTENT_ID"].ToString().Trim();