C#对文件/文件夹操作代码汇总

C#追加文件

StreamWriter sw = File.AppendText(Server.MapPath(".")+"\myText.txt"); 
sw.WriteLine("追逐理想"); 
sw.WriteLine("kzlll"); 
sw.WriteLine(".NET笔记"); 
sw.Flush(); 
sw.Close(); 

C#拷贝文件

string OrignFile,NewFile; 
OrignFile = Server.MapPath(".")+"\myText.txt"; 
NewFile = Server.MapPath(".")+"\myTextCopy.txt"; 
File.Copy(OrignFile,NewFile,true); 

C#删除文件

string delFile = Server.MapPath(".")+"\myTextCopy.txt"; 
File.Delete(delFile); 

C#移动文件

string OrignFile,NewFile; 
OrignFile = Server.MapPath(".")+"\myText.txt"; 
NewFile = Server.MapPath(".")+"\myTextCopy.txt"; 
File.Move(OrignFile,NewFile); 

C#创建目录

// 创建目录c:sixAge 
DirectoryInfo d=Directory.CreateDirectory("c:\sixAge"); 
// d1指向c:sixAgesixAge1 
DirectoryInfo d1=d.CreateSubdirectory("sixAge1"); 
// d2指向c:sixAgesixAge1sixAge1_1 
DirectoryInfo d2=d1.CreateSubdirectory("sixAge1_1"); 
// 将当前目录设为c:sixAge 
Directory.SetCurrentDirectory("c:\sixAge"); 
// 创建目录c:sixAgesixAge2 
Directory.CreateDirectory("sixAge2"); 
// 创建目录c:sixAgesixAge2sixAge2_1 
Directory.CreateDirectory("sixAge2\sixAge2_1"); 

递归删除文件夹及文件

<%@ Page Language=C#%> 
<%@ import namespace="System.IO"%>