[转]C#操作文件

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");