c#操作文本

private const string FILE_NAME = \"ErroLog.txt\"; public static void WriteFile(string str) ...{

StreamWriter sr;

if (File.Exists(FILE_NAME)) //如果文件存在,则创建File.AppendText对象 ...{

sr = File.AppendText(FILE_NAME); }

else //如果文件不存在,则创建File.CreateText对象 ...{

sr = File.CreateText(FILE_NAME); }

sr.WriteLine(str); sr.Close(); } 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:\\sixAge\\sixAge1

DirectoryInfo d1=d.CreateSubdirectory(\"sixAge1\"); // d2指向c:\\sixAge\\sixAge1\\sixAge1_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:\\sixAge\\sixAge2

Directory.CreateDirectory(\"sixAge2\"); // 创建目录c:\\sixAge\\sixAge2\\sixAge2_1 Directory.CreateDirectory(\"sixAge2\\\\sixAge2_1\"); 递归删除文件夹及文件 <%@ Page Language=C#%>

<%@ Import namespace=\"System.IO\"%>