C# 文件/文件夹处理常用类 File，Directory，Path

本文介绍: C# 文件/文件夹处理常用类 File，Di rect o ry，Pa th

类	功能	函数	举例
File	用于创建、复制、移动、删除和读写文件等操作
File	创建文件	Cre a t e	string filePa th = “C:\path\to\file.txt“; File.Cre a te(filePa th);
	复制文件	Cop y	string sourceFilePa t h = “C:\path\to\so u rce.txt“; string destFilePa t h = “C:\path\to\dest i nat ion.txt“; File.Copy(so u rceFilePath, destFilePath);
	移动文件	Move	string so u rceFilePath = “C:\path\to\so u rce.txt“; string destFilePath = “C:\path\to\destinat ion.txt“; File.Move(sou rceFilePath, destFilePath);
	删除文件	Delete	string filePath = “C:\path\to\file.txt”; File.Delete(filePath);
	读取文件内容	ReadAllText	string filePath = “C:\path\to\file.txt”; string content = File.ReadAllText(filePath);
	写入文件内容	WriteAllText	string filePath = “C:\path\to\file.txt”; string content = “Hel lo, Wor ld!”; File.WriteAllText(filePath, content);
Directory	Directory类：用于创建、复制、移动和删除文件夹等操作
Directory	创建	CreateDirectory	str in g path = “C:\path\to\f old er“; Dire ctory.CreateDir ectory(path);
	删除	Delete	str in g path = “C:\path\to\f old er“; Dir ectory.Delete(path);
	移动	Move	strin g sou rcePath = “C:\path\to\f old er“; s tr in g des ti nat ionPath = “C:\new\path\to\f ol der”; Directory.Move(sourcePath, des ti nat ionPath);
	检查	Exi sts	s tr in g path = “C:\path\to\f ol der”; bool exists = Directory.Exi sts(path);
	获取子文件夹	GetDirectorie s	stri ng path = “C:\parent\f ol der”; s tring[] su bDirectorie s = Directory.GetDirectorie s(path); foreach (string su bDire ctory in su bDire ctories) { Console.WriteLine(su bDirectory); }
	获取子文件	GetFiles	string path = “C:\parent\f ol der”; string[] files = Directory.GetFiles(path); foreach (string file in files) { Console.WriteLine(file); }
	拷贝	Copy	string sourcePath = “C:\source\f ol der”; string des ti nat ionPath = “C:\des ti nat ion\fol der”; Directory.Copy(sourcePath, des tinationPath);
Path	Path类是Syste m.IO命名空间中用于处理文件和文件夹路径的常见操作的类。它提供了一组静态方法，可以轻松处理路径字符串。以下是一些Path类常用的方法
Path	组合	Com bine	string path1 = “C:\path\to”; string path2 = “file.txt”; string combine dPath = Path.Com bine(path1, path2); // 结果：C:pathtofile.txt
	获取文件名	GetFileName	string path = “C:\path\to\file.txt”; string fileName = Path.GetFileName(path); // 结果：file.txt
	获取路径	GetDirectoryName	string path = “C:\path\to\file.txt”; string directoryName = Path.GetDirectoryName(path); // 结果：C:pathto
	获取扩展名	GetExtens ion	string path = “C:\path\to\file.txt”; string extension = Path.GetExtens ion(path); // 结果：.txt
	获取文件名不含扩展名	GetFileName WithoutExtens ion	string path = “C:\path\to\file.txt”; string fileNameWithoutExtens ion = Path.GetFileNameWithoutExtens ion(path); // 结果：file
	绝对路径	GetFullPath	string relativePath = “folder\file.txt”; string fullPath = Path.GetFullPath(relativePath); // 结果：C:current directoryfolderfile.txt