使用递归生成文件目录树

/*
因为收集了许多C#编程方面的小技巧,为了便于查看,便做了这个小程序

*/

//操作TreeView，生成文件目录树
using System;
using System.IO;
using System.Windows.Forms;
using System.Collections;

namespace codeView
{
 /// <summary>
 /// loadFiles 的摘要说明。
 /// </summary>
 public class loadFiles
 {
  public loadFiles()
  {
   //
   // TODO: 在此处添加构造函数逻辑
   //
  }

  private TreeView tv1;
  public void loadToTree(TreeView tv)
  {
   this.tv1=tv;
   TreeNode fatherNode=new TreeNode(Application.StartupPath);
   this.tv1.Nodes.Add(fatherNode);
   this.getAllDirectories(new DirectoryInfo(Application.StartupPath),fatherNode);
  }

  private void getAllDirectories(DirectoryInfo info1,TreeNode nd)
  {

   DirectoryInfo[] infoArray1 = info1.GetDirectories();

   foreach(DirectoryInfo dir in infoArray1)
   {
    TreeNode node=new TreeNode(dir.Name);
    FileInfo[] arrfiles=dir.GetFiles();
    for (int num2 = 0; num2 < arrfiles.Length; num2++)
    {
     FileInfo info4 = arrfiles[num2];
     TreeNode fileNode=new TreeNode(info4.Name);
     node.Nodes.Add(fileNode);
    }
    this.getAllDirectories(dir,node);
    
    //通过递归搜索出该路径下所有文件
    nd.Nodes.Add(node);
   }

  }
 }
}

//主界面
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Diagnostics;

namespace codeView
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class frmMain : System.Windows.Forms.Form
 {
  private System.Windows.Forms.TreeView treeViewCode;
  private System.Windows.Forms.Button btOpen;
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;

  public frmMain()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

  /// <summary>
  /// 清理所有正在使用的资源。
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

  #region Windows 窗体设计器生成的代码
  /// <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.treeViewCode = new System.Windows.Forms.TreeView();
   this.btOpen = new System.Windows.Forms.Button();
   this.SuspendLayout();
   //
   // treeViewCode
   //
   this.treeViewCode.ImageIndex = -1;
   this.treeViewCode.Location = new System.Drawing.Point(8, 16);
   this.treeViewCode.Name = "treeViewCode";
   this.treeViewCode.SelectedImageIndex = -1;
   this.treeViewCode.Size = new System.Drawing.Size(424, 416);
   this.treeViewCode.TabIndex = 0;
   this.treeViewCode.DoubleClick += new System.EventHandler(this.treeViewCode_DoubleClick);
   //
   // btOpen
   //
   this.btOpen.Location = new System.Drawing.Point(440, 64);
   this.btOpen.Name = "btOpen";
   this.btOpen.Size = new System.Drawing.Size(80, 32);
   this.btOpen.TabIndex = 1;
   this.btOpen.Text = "打开";
   this.btOpen.Click += new System.EventHandler(this.btOpen_Click);
   //
   // frmMain
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(536, 470);
   this.Controls.Add(this.btOpen);
   this.Controls.Add(this.treeViewCode);
   this.Name = "frmMain";
   this.Text = "查看源代码";
   this.Load += new System.EventHandler(this.frmMain_Load);
   this.ResumeLayout(false);

  }
  #endregion

  /// <summary>
  /// 应用程序的主入口点。
  /// </summary>
  [STAThread]
  static void Main()
  {
   Application.Run(new frmMain());
  }

  private void treeViewCode_DoubleClick(object sender, System.EventArgs e)
  {
   this.openFile();
  }

  private loadFiles loadF;

  private void frmMain_Load(object sender, System.EventArgs e)
  {
   loadF=new loadFiles();
   loadF.loadToTree(this.treeViewCode);
  }

  private void btOpen_Click(object sender, System.EventArgs e)
  {
   this.openFile();
  }
  
  private void openFile()
  {
   if(this.treeViewCode.SelectedNode.Parent!=null)
   {
    string fileName =this.treeViewCode.SelectedNode.Text;
    TreeNode nd=this.treeViewCode.SelectedNode;
    string fileFullName = Application.StartupPath;
    MessageBox.Show(nd.FullPath);
    Process.Start(nd.FullPath);
   }
  }

 }
}