C#进行文件读写、创建、复制、移动、删除的方法

//创建文件夹Directory.CreateDirectory(Server.MapPath("a"));Directory.CreateDirectory(Server.MapPath("b"));Directory.CreateDirectory(Server.MapPath("c"));//移动b到aDirectory.Move(Server.MapPath("b"), Server.MapPath("a//b"));//删除cDirectory.Delete(Server.MapPath("c"));

//创建文件//使用File.Create创建再复制/移动/删除时会提示：//文件正由另一进程使用,因此该进程无法访问该文件//改用 FileStream 获取 File.Create //返回的 System.IO.FileStream再进行关闭就无此问题FileStream fs;fs = File.Create(Server.MapPath("a.txt"));fs.Close();fs = File.Create(Server.MapPath("b.txt"));fs.Close();fs = File.Create(Server.MapPath("c.txt"));fs.Close();//复制文件File.Copy(Server.MapPath("a.txt"),Server.MapPath("a//a.txt"));//移动文件File.Move(Server.MapPath("b.txt"),Server.MapPath("a//b.txt"));File.Move(Server.MapPath("c.txt"),Server.MapPath("a//c.txt"));//删除文件File.Delete(Server.MapPath("a.txt"));

if(Directory.Exists(Server.MapPath("a"))){ //所有子文件夹 foreach(string item inDirectory.GetDirectories(Server.MapPath("a"))) {  Response.Write("<b>文件夹：" + item +"</b><br/>");  DirectoryInfo directoryinfo = new DirectoryInfo(item);  Response.Write("名称："+directoryinfo.Name +"<br/>");  Response.Write("路径："+directoryinfo.FullName +"<br/>");  Response.Write("创建时间："+directoryinfo.CreationTime +"<br/>");  Response.Write("上次访问时间："+directoryinfo.LastAccessTime+"<br/>");  Response.Write("上次修改时间："+directoryinfo.LastWriteTime+"<br/>");  Response.Write("父文件夹："+directoryinfo.Parent+"<br/>");  Response.Write("所在根目录："+directoryinfo.Root+"<br/>");  Response.Write("<br/>"); } //所有子文件 foreach (string item inDirectory.GetFiles(Server.MapPath("a"))) {  Response.Write("<b>文件：" + item +"</b><br/>");  FileInfo fileinfo = new FileInfo(item);  Response.Write("名称：" + fileinfo.Name +"<br/>");  Response.Write("扩展名：" + fileinfo.Extension+"<br/>");  Response.Write("路径：" + fileinfo.FullName+"<br/>");  Response.Write("大小：" + fileinfo.Length+"<br/>");  Response.Write("创建时间：" + fileinfo.CreationTime+"<br/>");  Response.Write("上次访问时间：" + fileinfo.LastAccessTime+"<br/>");  Response.Write("上次修改时间：" + fileinfo.LastWriteTime+"<br/>");  Response.Write("所在文件夹：" + fileinfo.DirectoryName+"<br/>");  Response.Write("文件属性：" + fileinfo.Attributes+"<br/>");  Response.Write("<br/>"); }}

if (File.Exists(Server.MapPath("a//a.txt"))){ StreamWriter streamwrite = newStreamWriter(Server.MapPath("a//a.txt")); streamwrite.WriteLine("木子屋"); streamwrite.WriteLine("//www.VeVB.COm/"); streamwrite.Write("2008-04-13"); streamwrite.Close(); StreamReader streamreader = newStreamReader(Server.MapPath("a//a.txt")); Response.Write(streamreader.ReadLine()); Response.Write(streamreader.ReadToEnd()); streamreader.Close();}