用递归方法把资料绑定到TreeView控件,显示文档目录

using System.Collections.Generic;
using System.Reflection;
using System.Data;
 partial class ViewFolder: System.Web.UI.Page
    {            
        protected void Page_Load(object sender, System.EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                GetNotes();
            }          
        }

        private void GetNotes()
        {            
            //根节点            
            TreeNode tn=new TreeNode("我的文档", "0", this.ControlPath + "images/folder0.gif");
            int FolderControlID = DocumentController.GetTabId(this.PortalId, "ViewDocument");
            tn.NavigateUrl = Globals.NavigateURL(FolderControlID, "", "FolderId=0");
            TreeFolder.Nodes.Add(tn);

            DataTable dt=null;
            try
                {
                    dt = DocumentController.GetListFolder(UserId);                    
                }

                catch (Exception exc)
                {
                    //Module failed to load 
                    Exceptions.ProcessModuleLoadException(this, exc);
                }            
            //增加子节点
            IntiTree(TreeFolder.Nodes , dt, 0);       

            TreeNode dustbin = new TreeNode("垃圾箱", "-1");
            dustbin.ImageUrl = this.ControlPath + "images/Dustbin.gif";
            TreeFolder.Nodes.Add(dustbin);
        }
        //递归增加子节点
        private void IntiTree(TreeNodeCollection Nds,DataTable dt, int parentId)
        {
            DataView dv=new DataView();                      
            TreeNode tmpNd;            //创建临时节点

            dv.Table = dt;
            dv.RowFilter = "ParentFolderId=" + parentId;        //筛选数据
            int FolderControlID = DocumentController.GetTabId(this.PortalId, "ViewDocument");

            foreach(DataRowView drv in dv)
            {
                tmpNd=new TreeNode();
                int FolderId=Convert.ToInt32(drv["FolderId"]);            //当前节点的ID号
                tmpNd.Value=FolderId.ToString();
                tmpNd.Text=drv["FolderName"].ToString();

                string navUrl = "javascript:navurl('" + "http://" + Request.Url.Host + ResolveUrl("../Document/callIndex.aspx?FolderId=");
                tmpNd.NavigateUrl = navUrl + drv["FolderId"].ToString() + "')"; 

                tmpNd.ImageUrl = "images/folder1.gif";   
                tmpNd.Expanded = false;                                  //节点是否展开   
                //tmpNd.Target="main";                                //节点重定向的方向                 
                Nds[Nds.Count-1].ChildNodes.Add(tmpNd);               //将临时节点添加到TreeView菜单中
                IntiTree(Nds[Nds.Count-1].ChildNodes,dt,FolderId);        //递归调用,进行遍历
            }

         }
}