用TreeView控件实现资源管理器(显示本地硬盘下所有文件夹和文件，并可以浏览图片)(示例代码下载)[1]

(一).说明

        用TreeView控件实现资源管理器,显示本地硬盘下所有文件夹和文件，并可以浏览图片

(二).图片示例

(三).代码

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;

namespace 图像格式转II
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class FormMain : System.Windows.Forms.Form
 {
  private System.Windows.Forms.TreeView treeViewDir;
  private System.Windows.Forms.Splitter splitter1;
  private System.Windows.Forms.Panel panel1;
  private System.Windows.Forms.PictureBox pictureBox;
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;

  private Bitmap bitmap;
  //public  void Bitmap(string filename,bool useIcm);//**********
  public FormMain()
  {
   //
   // 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
   //
   pictureBox.Top=treeViewDir.Top;
   pictureBox.Left=treeViewDir.Left;
   pictureBox.Width=panel1.Width;
   pictureBox.Height=panel1.Height;
   bitmap=null;
   FillDirTree();  
  }

  /// <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 Form Designer generated code
  /// <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.treeViewDir = new System.Windows.Forms.TreeView();
   this.splitter1 = new System.Windows.Forms.Splitter();
   this.panel1 = new System.Windows.Forms.Panel();
   this.pictureBox = new System.Windows.Forms.PictureBox();
   this.panel1.SuspendLayout();
   this.SuspendLayout();
   //
   // treeViewDir
   //
   this.treeViewDir.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(0)), ((System.Byte)(192)), ((System.Byte)(192)));
   this.treeViewDir.Dock = System.Windows.Forms.DockStyle.Left;
   this.treeViewDir.ImageIndex = -1;
   this.treeViewDir.Location = new System.Drawing.Point(0, 0);
   this.treeViewDir.Name = "treeViewDir";
   this.treeViewDir.SelectedImageIndex = -1;
   this.treeViewDir.Size = new System.Drawing.Size(136, 373);
   this.treeViewDir.TabIndex = 0;
   this.treeViewDir.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeViewDir_AfterSelect);
   this.treeViewDir.BeforeExpand += new System.Windows.Forms.TreeViewCancelEventHandler(this.treeViewDir_BeforeExpand);
   //
   // splitter1
   //
   this.splitter1.Location = new System.Drawing.Point(136, 0);
   this.splitter1.Name = "splitter1";
   this.splitter1.Size = new System.Drawing.Size(8, 373);
   this.splitter1.TabIndex = 1;
   this.splitter1.TabStop = false;
   //
   // panel1
   //
   this.panel1.Controls.Add(this.pictureBox);
   this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
   this.panel1.Location = new System.Drawing.Point(144, 0);
   this.panel1.Name = "panel1";
   this.panel1.Size = new System.Drawing.Size(360, 373);
   this.panel1.TabIndex = 2;
   this.panel1.Resi