(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.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<drivers.Length;i++) { Console.WriteLine("i={0}",i); if(PlatformInvokeKernel32.GetDriveType(drivers[i])==PlatformInvokeKernel32.DRIVE_FIXED) { DirNode root=new DirNode(drivers[i]); treeViewDir.Nodes.Add(root); AddDirs(root); } } } private void AddDirs(TreeNode node) { try { DirectoryInfo dir=new DirectoryInfo(GetPathFromNode(node)); DirectoryInfo[] e=dir.GetDirectories(); FileInfo[] f=dir.GetFiles(); string name; for(int i=0;i<e.Length;i++) { name=e[i].Name; if(!name.Equals(".")&&!name.Equals("..")) { node.Nodes.Add(new DirNode(name)); } } for(int i=0;i<f.Length;i++) { name=f[i].Name; node.Nodes.Add(new DirNode(name)); } } catch { } } private string GetPathFromNode(TreeNode node) { if(node.Parent==null) { return node.Text; } return Path.Combine(GetPathFromNode(node.Parent),node.Text); } /// <summary> /// 应用程序的主入口点。 /// </summary> [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<node.Nodes.Count;i++) { AddDirs(node.Nodes[i]); } node.SubDirectoriesAdded=true; } }}
(四).示例代码下载
http://www.cnblogs.com/Files/ChengKing/TreeView_WinForm.rar
