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)

(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
{
 ///
 /// Form1 的摘要说明。
 ///
 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;
  ///
  /// 必需的设计器变量。
  ///
  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();  
  }
  ///
  /// 清理所有正在使用的资源。
  ///
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }
  #region Windows Form Designer generated code
  ///
  /// 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。
  ///
  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.Resize += new System.EventHandler(this.panel1_Resize);
   //
   // pictureBox
   //
   this.pictureBox.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
   this.pictureBox.Dock = System.Windows.Forms.DockStyle.Fill;
   this.pictureBox.Location = new System.Drawing.Point(0, 0);
   this.pictureBox.Name = "pictureBox";
   this.pictureBox.Size = new System.Drawing.Size(360, 373);
   this.pictureBox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
   this.pictureBox.TabIndex = 0;
   this.pictureBox.TabStop = false;
   //
   // FormMain
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(504, 373);
   this.Controls.Add(this.panel1);
   this.Controls.Add(this.splitter1);
   this.Controls.Add(this.treeViewDir);
   this.Name = "FormMain";
   this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
   this.Text = "图像浏览";
   this.panel1.ResumeLayout(false);
   this.ResumeLayout(false);
  }
  #endregion
  private void FillDirTree()
  {
   string[] drivers=Environment.GetLogicalDrives();
   for(int i=0;i
  /// 应用程序的主入口点。
  ///
  [STAThread]
  static void Main()
  {
   Application.Run(new FormMain());
  }
  private void panel1_Resize(object sender, System.EventArgs e)
  {
   pictureBox.Top=treeViewDir.Top;
   pictureBox.Left=treeViewDir.Left;
   if(bitmap!=null)
   {
    if(bitmap.Width>bitmap.Height)
    {
     pictureBox.Width=panel1.Width;
     pictureBox.Height=
      (int)((double) bitmap.Height*panel1.Width/bitmap.Width);
    }
    else
    {
     pictureBox.Height=panel1.Height;
     pictureBox.Width=
      (int)((double) bitmap.Width*panel1.Height/bitmap.Height);
    }
   }
   else
   {
    pictureBox.Width=panel1.Width;
    pictureBox.Height=panel1.Height;
   }
   pictureBox.Refresh();
  }
  private void treeViewDir_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
  {
   if(bitmap!=null)
   {
    bitmap.Dispose();
   }
   try
   {
    string fileName=GetPathFromNode(e.Node);
    bitmap=new Bitmap(fileName);
    FileInfo f=new FileInfo(fileName);
    if(bitmap.Width>bitmap.Height)
    {
     pictureBox.Width=panel1.Width;
     pictureBox.Height=
      (int)((double) bitmap.Height*panel1.Width/bitmap.Width);
    }
    else
    {
     pictureBox.Height=panel1.Height;
     pictureBox.Width=
      (int)((double) bitmap.Width*panel1.Height/bitmap.Height);
    }
    pictureBox.Image=bitmap;
    this.Text="图像浏览"+f.Name;
   }
   catch
   {
    pictureBox.Width=panel1.Width;
    pictureBox.Height=panel1.Height;
   }
  }
  private void treeViewDir_BeforeExpand(object sender, System.Windows.Forms.TreeViewCancelEventArgs e)
  {
   DirNode nodeExpanding=(DirNode)e.Node;
   if(!nodeExpanding.SubDirectoriesAdded)
   {
    AddSubDirs(nodeExpanding);
   }
  }
  private void AddSubDirs(DirNode node)
  {
   for(int i=0;i(四).示例代码下载       http://www.cnblogs.com/Files/ChengKing/TreeView_WinForm.rar 
 
 

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