仿资源管理器功能实现
以前的一个项目myTree中仿资源管理器功能实现，
，忘记的差不多了。可能是按照网络现成实例做的。
自定义功能函数：
myExtractIcon(...)和SetIcon(...)函数功能是获取文件夹和文件的图标。
GetDrive() 获取系统驱动器时调用。
AddDirectories(...) 获得当前目录下的所有目录。填充树壮控件
ListViewAB(...) 在大图标、小图标、详细列表切换时调用
InitList(...) 填充列表框
InitList2(...) 同InitList一样，只是参数不一样。在列表框中双击目录时调用。
主要事件
1：TreeView控件的BeforeExpand事件；该事件是TreeView控件的节点展开时发生。
2：TreeView控件的AfterSelect事件；该事件是TreeView控件的节点选中时发生。
3：ListView控件的ItemActivate事件。该事件是在ListView控件中双击选中的文件时发生。
在GetDrive()函数中将"G"光盘符，换成你电脑中的光盘符。
本程序主要应用了C#中的DirectoryInfo和FileInfo类。使用了2个获取文件图标的API函数。
代码如下：
private System.Windows.Forms.TreeView treeView1;private System.Windows.Forms.ListView listView1; [DllImport("Shell32.dll")] public static extern int ExtractIcon(IntPtr h,string strx,int ii); [DllImport("Shell32.dll")] public static extern int SHGetFileInfo(string pszPath,uint dwFileAttributes,ref SHFILEINFO psfi,uint cbFileInfo, uint uFlags); public struct SHFILEINFO
{ 
public IntPtr hIcon; public int iIcon; public uint dwAttributes; public char szDisplayName; public char szTypeName; 
} //在shell32.dll导入函数SHGetFileInfo [DllImport("shell32.dll", EntryPoint="SHGetFileInfo")] public static extern int GetFileInfo(string pszPath, int dwFileAttributes, ref MyFileInfomation psfi, int cbFileInfo,int uFlags); //定义SHFILEINFO结构(名字随便起，这里用MyFileInfomation) [StructLayout(LayoutKind.Sequential)] public struct MyFileInfomation { public IntPtr hIcon; public int iIcon; public int dwAttributes; [MarshalAs(UnmanagedType.ByValTStr, SizeConst=260)] public string szDisplayName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst=80)] public string szTypeName; } //定义文件属性标识 public enum FileAttributeFlags : int { FILE_ATTRIBUTE_READONLY =0x00000001, FILE_ATTRIBUTE_HIDDEN =0x00000002, FILE_ATTRIBUTE_SYSTEM =0x00000004, FILE_ATTRIBUTE_DIRECTORY =0x00000010, FILE_ATTRIBUTE_ARCHIVE =0x00000020, FILE_ATTRIBUTE_DEVICE =0x00000040, FILE_ATTRIBUTE_NORMAL =0x00000080, FILE_ATTRIBUTE_TEMPORARY =0x00000100, FILE_ATTRIBUTE_SPARSE_FILE =0x00000200, FILE_ATTRIBUTE_REPARSE_POINT =0x00000400, FILE_ATTRIBUTE_COMPRESSED =0x00000800, FILE_ATTRIBUTE_OFFLINE =0x00001000, FILE_ATTRIBUTE_NOT_CONTENT_INDEXED =0x00002000, FILE_ATTRIBUTE_ENCRYPTED =0x00004000 } //定义获取资源标识 public enum GetFileInfoFlags : int { SHGFI_ICON =0x000000100, // get icon SHGFI_DISPLAYNAME =0x000000200, // get display name SHGFI_TYPENAME =0x000000400, // get type name SHGFI_ATTRIBUTES =0x000000800, // get attributes SHGFI_ICONLOCATION =0x000001000, // get icon location SHGFI_EXETYPE =0x000002000, // return exe type SHGFI_SYSICONINDEX =0x000004000, // get system icon index SHGFI_LINKOVERLAY =0x000008000, // put a link overlay on icon SHGFI_SELECTED =0x000010000, // show icon in selected state SHGFI_ATTR_SPECIFIED =0x000020000, // get only specified attributes SHGFI_LARGEICON =0x000000000, // get large icon SHGFI_SMALLICON =0x000000001, // get small icon SHGFI_OPENICON =0x000000002, // get open icon SHGFI_SHELLICONSIZE =0x000000004, // get shell size icon SHGFI_PIDL =0x000000008, // pszPath is a pidl SHGFI_USEFILEATTRIBUTES =0x000000010, // use passed dwFileAttribute SHGFI_ADDOVERLAYS =0x000000020, // apply the appropriate overlays SHGFI_OVERLAYINDEX =0x000000040 // Get the index of the overlay}//******************************************************************************** string strFilePath=""; //************************************************************************************* protected virtual Icon myExtractIcon(string FileName,int iIndex) { try
{
IntPtr hIcon=(IntPtr)ExtractIcon(this.Handle,FileName,iIndex); if(! hIcon.Equals(null)) { Icon icon=Icon.FromHandle(hIcon); return icon;
} } catch(Exception ex) { MessageBox.Show(ex.Message,"错误提示",0,MessageBoxIcon.Error);} return null; } //************************************************************************************* protected virtual void SetIcon(ImageList imageList,string FileName,bool tf) { SHFILEINFO fi=new SHFILEINFO(); if(tf==true) { int iTotal=(int)SHGetFileInfo(FileName,0,ref fi,100, 16640);//SHGFI_ICON|SHGFI_SMALLICON try { if(iTotal >0) { Icon ic=Icon.FromHandle(fi.hIcon); imageList.Images.Add(ic); //return ic; } } catch(Exception ex) { MessageBox.Show(ex.Message,"错误提示",0,MessageBoxIcon.Error);} } else { int iTotal=(int)SHGetFileInfo(FileName,0,ref fi,100, 257); try { if(iTotal >0) { Icon ic=Icon.FromHandle(fi.hIcon); imageList.Images.Add(ic); //return ic; } } catch(Exception ex) { MessageBox.Show(ex.Message,"错误提示",0,MessageBoxIcon.Error);} } // return null; } //*************************************************************************************构造函数中 ： Icon ic0=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",15); TreeImageList.Images.Add(ic0); Icon ic1=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",5); TreeImageList.Images.Add(ic1); Icon ic2=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",7); TreeImageList.Images.Add(ic2); Icon ic3=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",11); TreeImageList.Images.Add(ic3); Icon ic4=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",3); TreeImageList.Images.Add(ic4); Icon ic5=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",4); TreeImageList.Images.Add(ic5); Icon ic6=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",101); TreeImageList.Images.Add(ic6); this.directoryPath=@Application.StartupPath; GetDrive();//************************************************************************************* public void GetDrive() { treeView1.ImageList=TreeImageList; TreeNode rootNode; DirectoryInfo info = new DirectoryInfo(this.directoryPath); if (info.Exists) { rootNode = new TreeNode(info.Name,4,5); rootNode.Tag = info; GetDirectories(info.GetDirectories(), rootNode); this.treeView1.Nodes.Add(rootNode); this.pre_Path=@RemoveInfoName(); } } //*************private void GetDirectories(DirectoryInfo[] subDirs, TreeNode nodeToAddTo) { TreeNode aNode; DirectoryInfo[] subSubDirs; foreach (DirectoryInfo subDir in subDirs) { aNode = new TreeNode(subDir.Name,4, 5); aNode.Tag = subDir; subSubDirs = subDir.GetDirectories(); if (subSubDirs.Length != 0) { GetDirectories(subSubDirs, aNode); } nodeToAddTo.Nodes.Add(aNode); } }private string RemoveInfoName() { string disk=string.Empty; DirectoryInfo info = new DirectoryInfo(this.directoryPath); if (info.Exists) { int index1=this.directoryPath.IndexOf(info.Name); disk=this.directoryPath.Substring(0,index1); } return disk; } void AddDirectories(TreeNode tn) { tn.Nodes.Clear(); string strPath=@RemoveInfoName(); strPath=strPath.Remove(0,5); //获得当前目录 DirectoryInfo dirinfo = new DirectoryInfo(strPath); DirectoryInfo[] adirinfo; try { adirinfo = dirinfo.GetDirectories(); } catch { return;} int iImageIndex=4; int iSelectedIndex=5; foreach (DirectoryInfo di in adirinfo) { if(di.Name=="RECYCLER"||di.Name=="RECYCLED"||di.Name=="Recycled") {iImageIndex=6; iSelectedIndex=6;} else {iImageIndex=4; iSelectedIndex=5;} TreeNode tnDir = new TreeNode(di.Name, iImageIndex, iSelectedIndex); tn.Nodes.Add(tnDir); } } //************************************************************************************* private void treeView1_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e) { if(e.Node.Text=="我的电脑") { return;} InitList(e.Node); }//*************************************************************************************protected virtual void InitList(TreeNode tn) { this.statusBarPanel1.Text="正在刷新文件夹，请稍等
.."; this.Cursor=Cursors.WaitCursor; this.LisrimageList2.Images.Clear(); this.LisrimageList.Images.Clear(); listView1.SmallImageList=LisrimageList; Icon ic0=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",3); LisrimageList.Images.Add(ic0); LisrimageList2.Images.Add(ic0); listView1.Clear(); //设置列表框的表头 listView1.Columns.Add("文件名",160,HorizontalAlignment.Left); listView1.Columns.Add("文件大小",120,HorizontalAlignment.Left); listView1.Columns.Add("创建时间",120,HorizontalAlignment.Left); listView1.Columns.Add("访问时间",200,HorizontalAlignment.Left); listView1.Columns.Add("文件类型",160,HorizontalAlignment.Left); string strPath=this.pre_Path+this.treeView1.SelectedNode.FullPath;// strPath=strPath.Remove(0,5); //获得当前目录下的所有文件 DirectoryInfo curDir=new DirectoryInfo(strPath) ;//);//创建目录对象。 FileInfo[] dirFiles; try { dirFiles=curDir.GetFiles(); } catch { return;} string []arrSubItem=new string[5]; //文件的创建时间和访问时间。 int iCount=0; int iconIndex=1;//用1，而不用0是要让过0号图标。 foreach(FileInfo fileInfo in dirFiles) { string strFileName=fileInfo.Name; //如果不是文件pagefile.sys if(! strFileName.Equals("pagefile.sys")) { arrSubItem[0]=strFileName; arrSubItem[1]=fileInfo.Length+" 字节"; arrSubItem[2]=fileInfo.CreationTime.ToString(); arrSubItem[3]=fileInfo.LastAccessTime.ToString();// string flex =System.IO.Path.GetExtension(strFileName); arrSubItem[4]=GetTypeName(strFileName); //fileInfo.Attributes.ToString(); } else { arrSubItem[1]="未知大小"; arrSubItem[2]="未知日期"; arrSubItem[3]="未知日期";} //得到每个文件的图标 string str=fileInfo.FullName; try { SetIcon(LisrimageList,str,false); SetIcon(LisrimageList2,str,true); } catch(Exception ex) { MessageBox.Show(ex.Message,"错误提示",0,MessageBoxIcon.Error);} //插入列表项 ListViewItem LiItem=new ListViewItem(arrSubItem,iconIndex); listView1.Items.Insert(iCount,LiItem); iCount++; iconIndex++; } strFilePath=strPath; textBox1.Text=strPath; this.statusBarPanel1.Text=strPath; this.statusBarPanel2.Text="文件数量: " + iCount.ToString()+"个"; this.Cursor=Cursors.Arrow; //以下是向列表框中插入目录，不是文件。获得当前目录下的各个子目录。 int iItem=0; DirectoryInfo Dir=new DirectoryInfo(strPath); foreach(DirectoryInfo di in Dir.GetDirectories()) { ListViewItem LiItem=new ListViewItem(di.Name,0); listView1.Items.Insert(iItem,LiItem); iItem++; } } protected virtual void InitList2(string strName) { this.statusBarPanel1.Text="正在刷新文件夹，请稍等.."; this.Cursor=Cursors.WaitCursor; this.LisrimageList2.Images.Clear(); this.LisrimageList.Images.Clear(); listView1.SmallImageList=LisrimageList; Icon ic0=myExtractIcon("%SystemRoot%\\system32\\shell32.dll",3); LisrimageList.Images.Add(ic0); LisrimageList2.Images.Add(ic0); listView1.Clear(); //设置列表框的表头 listView1.Columns.Add("文件名",160,HorizontalAlignment.Left); listView1.Columns.Add("文件大小",120,HorizontalAlignment.Left); listView1.Columns.Add("创建时间",120,HorizontalAlignment.Left); listView1.Columns.Add("访问时间",200,HorizontalAlignment.Left); listView1.Columns.Add("文件类型",160,HorizontalAlignment.Left); //获得当前目录下的所有文件 DirectoryInfo curDir=new DirectoryInfo(strName);//创建目录对象。 FileInfo[] dirFiles; try { dirFiles=curDir.GetFiles(); } catch { return;} string []arrSubItem=new string[5]; //文件的创建时间和访问时间。 int iCount=0; int iconIndex=1;//用1，而不用0是要让过0号图标。 foreach(FileInfo fileInfo in dirFiles) { string strFileName=fileInfo.Name; //如果不是文件pagefile.sys if(! strFileName.Equals("pagefile.sys")) { arrSubItem[0]=strFileName; arrSubItem[1]=fileInfo.Length+" 字节"; arrSubItem[2]=fileInfo.CreationTime.ToString(); arrSubItem[3]=fileInfo.LastAccessTime.ToString(); arrSubItem[4]=GetTypeName(strFileName); } else { arrSubItem[1]="未知大小"; arrSubItem[2]="未知日期"; arrSubItem[3]="未知日期";} //得到每个文件的图标 string str=fileInfo.FullName; try { SetIcon(LisrimageList,str,false); SetIcon(LisrimageList2,str,true); } catch(Exception ex) { MessageBox.Show(ex.Message,"错误提示",0,MessageBoxIcon.Error);} //插入列表项 ListViewItem LiItem=new ListViewItem(arrSubItem,iconIndex); listView1.Items.Insert(iCount,LiItem); iCount++; iconIndex++;//必须加在listView1.Items.Insert(iCount,LiItem); } strFilePath=strName;//把路径赋值于全局变量strFilePath textBox1.Text=strName; this.statusBarPanel2.Text="文件数量: " + iCount.ToString()+"个"; this.Cursor=Cursors.Arrow; //以下是向列表框中插入目录，不是文件。获得当前目录下的各个子目录。 int iItem=0;//调用listView1.Items.Insert(iItem,LiItem);时用。不能使用iconIndex。 DirectoryInfo Dir=new DirectoryInfo(strName);//创建目录对象。 foreach(DirectoryInfo di in Dir.GetDirectories()) { ListViewItem LiItem=new ListViewItem(di.Name,0); listView1.Items.Insert(iItem,LiItem); iItem++; } } //************************************************************************************* private void listView1_ItemActivate(object sender, System.EventArgs e) { string str=Path.Combine(strFilePath,listView1.FocusedItem.Text); try { if(listView1.FocusedItem.SubItems.Count>1) { System.Diagnostics.Process.Start(str); } else { InitList2(str); } } catch { return;} } //*************************************************************************************private string GetTypeName(string fileName){ MyFileInfomation fileInfo = new MyFileInfomation();//初始化MyFileInfomation结构 //调用GetFileInfo函数，最后一个参数说明获取的是文件类型(SHGFI_TYPENAME) int res = GetFileInfo(fileName, (int)FileAttributeFlags.FILE_ATTRIBUTE_NORMAL, ref fileInfo, Marshal.SizeOf(fileInfo), (int)GetFileInfoFlags.SHGFI_TYPENAME); return fileInfo.szTypeName;}
