C # File Operations Gallery

C # File operation: C # append file StreamWriter sw = File.appendtext (Server.MapPath (".")   
+ "\\myText.txt"); Sw.   
WriteLine ("Chasing the ideal"); Sw.   
WriteLine ("kzlll"); Sw. WriteLine (".   
NET Notes "); Sw.   
Flush (); Sw.   
Close ();   
C # File operation: C # Copy file string orignfile,newfile; Orignfile = Server.MapPath (".")   
+ "\\myText.txt"; NewFile = Server.MapPath (".")   
+ "\\myTextCopy.txt";   
File.Copy (orignfile,newfile,true); C # File operation: C # Delete file string delfile = Server.MapPath (".")   
+ "\\myTextCopy.txt";   
File.delete (Delfile);   
C # File operation: C # move file string orignfile,newfile; Orignfile = Server.MapPath (".")   
+ "\\myText.txt"; NewFile = Server.MapPath (".")   
+ "\\myTextCopy.txt";   
File.move (Orignfile,newfile);   
C # File operations: C # Create directory//create directory C:\sixAge DirectoryInfo d= directory.createdirectory ("C:\\sixage");   
D1 points to C:\sixAge\sixAge1 DirectoryInfo d1= d.createsubdirectory ("SixAge1"); D2 points to c:\sixAge\sixAge1\sixAge1_1 DirectoryInfo d2= D1.   
Createsubdirectory ("Sixage1_1"); Set the current directory to C:\sixAge Directory.setcurRentdirectory ("C:\\sixage");   
Create a directory C:\sixAge\sixAge2 directory.createdirectory ("SixAge2");  
Create a directory C:\sixAge\sixAge2\sixAge2_1 directory.createdirectory ("Sixage2\\sixage2_1"); Recursively delete folders and files 〈% @PageLanguage =c#%〉〈% @Importnamespace = "System.IO"%〉〈scriptrunat=server〉publicvoiddeletefolder (Strin  
Gdir) {if (directory.exists (dir))//If there is a deletion of this folder {foreach (stringdindirectory).  
GetFileSystemEntries (dir)) {if (file.exists (d)) File.delete (d);//delete directly from file else DeleteFolder (d);//recursively Delete subfolders}  
Directory.delete (dir);//Delete empty folder Response.Write (dir+ "folder deletion succeeded"); Else Response.Write (dir+ "This folder does not exist");//If the folder does not exist prompt} protectedvoidpage_load (Object Sender,eventargse) {St  
Ringdir= "D:\\gbook\\11"; DeleteFolder (Dir);//Call Function Delete folder}//========================================//Implement a static method copy all content under the specified folder to the target folder  
Face////If the destination folder is read-only, an error will be. April18april2005instu//======================================== Publicstaticvoidcopydir (STRINGSRCPath, Stringaimpath) {try {//Check whether the destination directory ends with a directory split character if not, add if (aimpath[aimpath.length-1]!= Path.directoryse  
Paratorchar) Aimpath+=path.directoryseparatorchar; Determine if the target directory exists if it does not exist the new if (!  
Directory.Exists (Aimpath)) Directory.  
CreateDirectory (Aimpath); Get the list of files in the source directory, which is an array containing files and directory paths//If you point to the file below the copy destination file without the directory, use the following method//string[]filelist= Directory.GetFiles (src  
Path);  
string[]filelist= directory.getfilesystementries (Srcpath); Traverse all files and directories foreach (stringfileinfilelist) {//first as directory processing if present this directory is recursively copy the file if (directory.exists (file)) copy of the Directory  
Dir (file,aimpath+path.getfilename (file));  
Otherwise direct Copy file else File.Copy (file,aimpath+path.getfilename (file), true);  
} catch (Exceptione) {MessageBox.Show (e.tostring ());  
//========================================//Implementation of a static method to specify all content under the folder Detele//test should be handled carefully, after deletion can not be restored. April18april2005instu//======================================== Publicstaticvoiddeletedir (StringaimPath)  
{try {//Check whether the destination directory ends with a directory split character if not, add if (aimpath[aimpath.length-1]!= Path.directoryseparatorchar) aimpath+  
=path.directoryseparatorchar; Get the list of files in the source directory, which is an array containing files and directory paths//If you point to the file below the delete destination file without the directory, use the following method//string[]filelist= Directory.GetFiles (a  
Impath);  
string[]filelist= directory.getfilesystementries (Aimpath);  
Traverse all files and directories foreach (stringfileinfilelist) {//first as directory processing if there is this directory recursively delete the file if (directory.exists (file)) {  
Deletedir (aimpath+path.getfilename (file));  
//Otherwise direct Delete file else {file.delete (aimpath+path.getfilename (file));  
}///delete folder System.IO.Directory.Delete (aimpath,true);  
catch (Exceptione) {MessageBox.Show (e.tostring ());  
 
You need to reference the namespace: Usingsystem.io;  
/**////〈summary〉///copy folders (including subfolders) to the specified folder, both the source folder and the destination folder require an absolute path.  
Format: CopyFolder (source folder, target folder); 〈/summary〉///〈paramname= "Strfrompath" 〉〈/param〉///〈paramname= "Strtopath" 〉〈/param〉//------------------------- ---------------//author: Tomorrow go begging qq:305725744//----------------------------------------Publicstaticvoidcopyfolder (Stringstrfrompath, Stringstrtopath) {//If the source folder does not exist, create an if (!  
Directory.Exists (Strfrompath)) {directory.createdirectory (Strfrompath);  
//Get the folder name Stringstrfoldername=strfrompath.substring (Strfrompath.lastindexof ("\") +1,strfrompath to be copied.  
 
Length-strfrompath.lastindexof ("\")-1); If there is no source folder in the destination folder, create the source folder in the destination folder if (!  
Directory.Exists (strtopath+ "\" +strfoldername)) {directory.createdirectory (strtopath+ "\" +strFolderName);  
 
//Create an array to save the file name under the source folder String[]strfiles=directory.getfiles (Strfrompath);  
Cycle Copy file for (inti=0;i〈strfiles.length;i++) {//Get copy of file name, only filename, address truncated. Stringstrfilename=strfiles[i]. Substring (Strfiles[i]. LastIndexOf ("\") +1, Strfiles[i].  
Length-strfiles[i].  
LastIndexOf ("\")-1);  
Start copying files, true to overwrite files with the same name file.copy (strfiles[i],strtopath+ "\" +strfoldername+ "\" +strfilename,true); }//Create DirectoryInfo instance Directoryinfodirinfo=newdiRectoryinfo (Strfrompath);  
Gets the name of all subfolders under the source folder Directoryinfo[]zipath=dirinfo.getdirectories (); for (intj=0;j〈zipath.length;j++) {//Get all subfolder names stringstrzipath=strfrompath+ "\" + zipath[j].  
ToString ();  
Take the resulting subfolder as a new source folder, start a new round of copy copyfolder (strzipath,strtopath+ "\" + strfoldername); C # File actions: Reading text file **////〈summary〉//reading text file//〈/summary〉4private void Readfromtxtfile () 5{if (filepat  
H.postedfile.  
   FileName!= "") {Txtfilepath = FilePath.PostedFile.FileName;  
Fileextname = txtfilepath.substring (Txtfilepath. LastIndexOf (".")  
 
  +1,3);  
  if (fileextname!= "txt" && fileextname!= "txt") {Response.Write ("Please select a text file");  
  else {StreamReader FileStream = new StreamReader (Txtfilepath,encoding.default);  
  Txtcontent.text = Filestream.readtoend ();  
  Filestream.close (); The C # File action: Get file list **////〈summary〉//get file list//〈/summary〉private void Getfilelist () {string strcur DIr,filename,fileext;  
     
   /**////file size long FileSize;  
   /**////the last modification time;  
 
   DateTime filemodify; /**////Initialize if (!  
    IsPostBack) {/**////when initializing, the directory Strcurdir = Server.MapPath (".") where the current page is assumed to be the default;  
    Lblcurdir.text = Strcurdir;  
   Txtcurdir.text = Strcurdir;  
    else {strcurdir = Txtcurdir.text;  
    Txtcurdir.text = Strcurdir;  
   Lblcurdir.text = Strcurdir;  
   } FileInfo fi;  
   DirectoryInfo dir;  
   TableCell TD;  
   TableRow tr;  
     
   TR = new TableRow ();  
   /**////dynamically add cell content td = New TableCell (); Td.  
   Controls.Add (New LiteralControl ("filename")); Tr.  
   Cells.add (TD);  
   td = New TableCell (); Td.  
   Controls.Add (New LiteralControl ("file type")); Tr.  
   Cells.add (TD);  
   td = New TableCell (); Td.  
   Controls.Add (New LiteralControl ("File Size")); Tr.  
   Cells.add (TD);  
   td = New TableCell (); Td.  
   Controls.Add (New LiteralControl ("Last Modified Time")); Tr.  
 
   Cells.add (TD); Tabledirinfo.rows.ADD (TR);  
     
   /**////creates directory reference objects for the current directory DirectoryInfo dirinfo = new DirectoryInfo (txtcurdir.text);  
The/**////loop determines the files and directories in the current directory foreach (FileSystemInfo FSI in Dirinfo.  
     Getfilesysteminfos ()) {FileName = "";  
     Fileext = "";  
         
     FileSize = 0;  
             
     /**////if it is a file if (FSI is FileInfo) {fi = (FileInfo) FSI;
     /**////get the file? FileName = fi.  
             
    Name;
    /**////to get file extensions? Fileext = fi.  
             
   Extension; /**////gets the size of the file FileSize = fi.  
             
  Length; /**////gets the last modification time of the file Filemodify = fi.  
  LastWriteTime;  
             
    }/**////Otherwise be directory else {dir = (DirectoryInfo) FSI;
    /**////Get the catalogue? FileName = dir.  
             
    Name; /**////gets the last modification time of the directory filemodify = dir.  
             
    LastWriteTime;  
    The/**////settings file has the extension "folder" Fileext = "folder";  
       /**////dynamically add table content tr = new TableRow (); td = New TableCell (); 
       Td.  
       Controls.Add (FileName) (new LiteralControl); Tr.  
       Cells.add (TD);  
       td = New TableCell (); Td.  
       Controls.Add (New LiteralControl (Fileext)); Tr.  
       Cells.add (TD);  
       td = New TableCell (); Td.  
       Controls.Add (New LiteralControl (filesize.tostring () + "byte")); Tr.  
       Cells.add (TD);  
       td = New TableCell (); Td.  
       Controls.Add (New LiteralControl (filemodify.tostring ("Yyyy-mm-dd hh:mm:ss")); Tr.  
       Cells.add (TD);  
   TABLEDIRINFO.ROWS.ADD (TR);  
C # File action: Read log file **////〈summary〉//read log file//〈/summary〉private void Readlogfile () {/**////from specified directory to hit Open or create a form read the log file FileStream fs = new FileStream (Server.MapPath ("upedfile") + "\\logfile.txt", filemode.openorcreat  
 
   E, FileAccess.Read);  
     
   /**////defines the output string StringBuilder outputs = new StringBuilder (); /**////initializes the length of the string to output.  
     
   Length = 0;
   /**////create read data for the file stream created above? StreamReader read = new StreamReader (FS);
   /**////set the starting position of the current stream as the start of the file stream? Read.  
     
   Basestream.seek (0, Seekorigin.begin); /**////reads a file while (read. Peek () 〉-1) {/**////takes a row of the file and wraps output. Append (read.  
   ReadLine () + "\ n");
   /**////Close the release read data? Read.  
     
   Close (); /**////returns the contents of the log file read to return output.  
ToString (); C # File operation: Write log file **////〈summary〉//write log file//〈/summary〉//〈param name= "input" 〉〈/param〉private void Writelogf  
   Ile (String input) {/**////Specifies the directory string fname = Server.MapPath ("upedfile") + "\\logfile.txt" of the log file;  
 
   /**////definition file Information object FileInfo finfo = new FileInfo (fname); /**////determine if the file exists and is greater than 2K if (finfo). Exists && Finfo. length〉) {/**////deletes the file finfo.  
   Delete ();
  /**////Create a write-only file? using (FileStream fs = Finfo.
  Openwrite ()) {/**////Create write data based on the file flow created above?  
         
   StreamWriter w = new StreamWriter (FS); /**////sets the starting position of the write data stream to the end of the file stream W.basestream.seek (0, SeekOrigin.  
         
   End);  
         
  /**////writes "Log Entry:" W.write ("\nlog Entry:");  
/**////writes the current system time and wraps the line W.write ("{0} {1} \ r \ n", DateTime.Now.)  
         
   Tolongtimestring (), DateTime.Now.ToLongDateString ());  
         
   /**////writes the log content and wraps the line w.write (input + "\ n");  
         
 /**////writes to----------------"and wraps W.write ("------------------\ n ");
  /**////empty the contents of the buffer and write the buffer contents to the base?  
         
       W.flush ();
       /**////Write Data off?  
   W.close (); C # File actions: Create HTML file **////〈summary〉//create HTML file//〈/summary〉private void Createhtmlfile () {/**//  
   Defines an array with a consistent number of HTML tags string[] newcontent = new STRING[5];  
   StringBuilder strhtml = new StringBuilder ();  try {/**////Create StreamReader object using (StreamReader sr = new StreamReader (Server.MapPath ("createhtml")  
             
    + "\\template.html")) {String oneline; /**////reads the specified HTML file template while (Oneline = Sr. ReadLine ())!= null) {STRHTml.  
           Append (oneline); } Sr.  
       Close (); Exception Err {/**////Output exception information Response.Write (Err.  
   ToString ());
   /**////assign value to tag array newcontent[0] = txttitle.text;//?  
   NEWCONTENT[1] = "backcolor= ' #cccfff";//Background color newcontent[2] = "#ff0000";//Font color newcontent[3] = "100px";//font size NEWCONTENT[4] = txtcontent.text;//main content/**////generate HTML file try {/**////According to the new content above specifies the HTML file to be generated St  
         
  Ring fname = Server.MapPath ("createhtml") + "\" + DateTime.Now.ToString ("YYYYMMDDHHMMSS") + ". html"; /**////replaces the markup in the HTML template file for the new content for (int i=0;i〈5;i++) {strhtml.  
   Replace ("$htmlkey [" +i+ "]", newcontent[i]);  
         
   /**////Create the file information object FileInfo finfo = new FileInfo (fname);
   /**////create a file in the form of open or write? using (FileStream fs = Finfo.
 Openwrite ()) {/**////Create write data based on the file flow created above?  
StreamWriter sw = new StreamWriter (Fs,system.  
     Text.Encoding.GetEncoding ("GB2312"));        
  /**////writes the new content to the HTML page created by the SW.  
  WriteLine (strhtml); Sw.  
  Flush (); Sw.  
  Close ();
 /**////set the genus of hyperlinks?  
 Hycreatefile.text = DateTime.Now.ToString ("YYYYMMDDHHMMSS") + ". html";  
   Hycreatefile.navigateurl = "createhtml/" +datetime.now.tostring ("YYYYMMDDHHMMSS") + ". html"; The catch (Exception err) {Response.Write (err.  
   ToString ());  }  
}