C# · 12月 28, 2021

C#进行文件读写、创建、复制、移动、删除的方法

本文实例讲述了C#进行文件读写、创建、复制、移动、删除的方法。分享给大家供大家参考。具体分析如下:

1.文件夹创建、移动、删除

//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”));

2.文件创建、复制、移动、删除

//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”));

3.遍历文件夹中的文件和子文件夹并显示其属性

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/>”); }}

4.文件读写

if (File.Exists(Server.MapPath(“a//a.txt”))){ StreamWriter streamwrite = newStreamWriter(Server.MapPath(“a//a.txt”)); streamwrite.WriteLine(“木子屋”); streamwrite.WriteLine(“http://www.jb51.net/”); 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();}

希望本文所述对大家的C#程序设计有所帮助。