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"]);
            }
        }

------解决方案--------------------
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);                        
                    }
                }
            }
        }

------解决方案--------------------
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);
}

------解决方案--------------------
 /// <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();