<%@ Page language="c#" Codebehind="default.aspx.cs" AutoEventWireup="false" Inherits="OsFilesytem._default" %><%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ><HTML><HEAD><title>WebForm2</title><meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1"><meta name="CODE_LANGUAGE" Content="C#"><meta name="vs_defaultClientScript" content="JavaScript"><meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"></HEAD><body><form id="Form1" method="post" runat="server"><iewc:TreeView id="TreeView1" runat="server" AutoPostBack="True" BackColor="#EEEEEE"></iewc:TreeView></form></body></HTML>
default.aspx.cs代码：
using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using Microsoft.Web.UI.WebControls; using System.IO; namespace OsFilesytem { /// <summary> /// WebForm2 的摘要说明。 /// </summary> public class _default : System.Web.UI.Page { protected Microsoft.Web.UI.WebControls.TreeView TreeView1; private void Page_Load(object sender, System.EventArgs e) { if(!Page.IsPostBack) { TreeNode newnode=new TreeNode(); newnode.Text="我的电脑"; this.TreeView1.Nodes.Add(newnode); try { string[] drives = System.IO.Directory.GetLogicalDrives(); foreach (string str in drives) { TreeNode tmpNd; tmpNd=new TreeNode(); tmpNd.Text=str; this.TreeView1.Nodes[0].Nodes.Add(tmpNd); //ProcessDirectory(str,tmpNd); } } catch (System.IO.IOException) { this.Response.Write("I/O错误！"); } catch (System.Security.SecurityException) { this.Response.Write("没有访问权限！"); } } } public void ProcessDirectory(string targetDirectory,TreeNode TN) { if(targetDirectory.ToString()==@"A:/") { return; } TreeNode tmpNd; try { // Process the list of files found in the directory string [] fileEntries = Directory.GetFiles(targetDirectory); foreach(string fileName in fileEntries) { tmpNd=new TreeNode(); //只显示文件名 tmpNd.Text=fileName.Substring(fileName.LastIndexOf(@"/")+1); //显示文件 全名（路径+名称） //tmpNd.Text=fileName; TN.Nodes.Add(tmpNd); } // Recurse into subdirectories of this directory string [] subdirectoryEntries = Directory.GetDirectories(targetDirectory); foreach(string subdirectory in subdirectoryEntries) { tmpNd=new TreeNode(); //只显示文件夹名 tmpNd.Text=subdirectory.Substring(subdirectory.LastIndexOf(@"/")+1); //显示文件夹 全名（路径+名称） //tmpNd.Text=subdirectory; TN.Nodes.Add(tmpNd); //ProcessDirectory(subdirectory,tmpNd); } } catch { } } /// <summary> /// 获得当前结点的全名 /// </summary> /// <param name="TN">当前结点</param> /// <returns>全名</returns> private string GetFullName(TreeNode TN) { if(TN.Text=="我的电脑") { return "我的电脑"; } string str_fullname=""; while(((TreeNode)TN.Parent).Text!="我的电脑") { str_fullname = TN.Text + @"/" + str_fullname; TN=(TreeNode)TN.Parent; } str_fullname =TN.Text + str_fullname; return str_fullname; } #region Web 窗体设计器生成的代码 override protected void OnInit(EventArgs e) { // // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。 // InitializeComponent(); base.OnInit(e); } /// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// </summary> private void InitializeComponent() { this.TreeView1.Expand += new Microsoft.Web.UI.WebControls.ClickEventHandler(this.TreeView1_Expand); this.Load += new System.EventHandler(this.Page_Load); } #endregion private void TreeView1_Expand(object sender, Microsoft.Web.UI.WebControls.TreeViewClickEventArgs e) { TreeNode TNS=this.TreeView1.GetNodeFromIndex(e.Node); foreach(TreeNode TN in TNS.Nodes) { this.ProcessDirectory(this.GetFullName(TN),TN); } } } }