TreeView绑定硬盘文件

 有时候需要做一个像资源管理器一样的东西来查看服务器中的文件，怎么做呢，我写了一个

using  System;
using  System.Data;
using  System.Configuration;
using  System.Collections;
using  System.Web;
using  System.Web.Security;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  System.Web.UI.WebControls.WebParts;
using  System.Web.UI.HtmlControls;
using  System.IO;

namespace  WebApplication1
{
     public  partial  class  _Default : System.Web.UI.Page
    {
         private   void  Page_Load( object  sender, System.EventArgs e)
        {
             if  ( ! IsPostBack)
            {
                BdTreeView(AppDomain.CurrentDomain.BaseDirectory,TreeView1.Nodes);
            }

        }

         public   void  BdTreeView( string  dir, TreeNodeCollection tc)
        {
            DirectoryInfo di  =   new  DirectoryInfo(dir);
            DirectoryInfo[] sunDir  =  di.GetDirectories();
            FileInfo[] ffi  =  di.GetFiles();
             foreach  (DirectoryInfo i  in  sunDir)
            {
                TreeNode tn  =   new  TreeNode();
                tn.Text  =  Path.GetFileName(i.FullName);
                tc.Add(tn);
                BdTreeView(i.FullName, tn.ChildNodes);
            }
             foreach  (FileInfo j  in  ffi)
            {
                TreeNode fileNode  =   new  TreeNode();
                fileNode.Text  =  System.IO.Path.GetFileName(j.FullName);
                tc.Add(fileNode);
            }

        }



    }
}