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初中生可做兼职的网站,百度云盘资源,无锡大型网站设计公司,学室内设计要多久能学会操作文件和文件夹是程序开发中常用#xff0c;无论是C/S和B/S都会存在操作文件的需求#xff0c;比如上传新闻图片按日期创建文件夹#xff0c;用文本文件存储用户信息等。下面介绍28种文件操作的方法#xff0c;希望对大家的开发有所帮助1.创建文件夹//using System.IO;Di…操作文件和文件夹是程序开发中常用无论是C/S和B/S都会存在操作文件的需求比如上传新闻图片按日期创建文件夹用文本文件存储用户信息等。下面介绍28种文件操作的方法希望对大家的开发有所帮助1.创建文件夹//using System.IO;Directory.CreateDirectory(path);2.创建文件//using System.IO;File.Create(path);3.删除文件//using System.IO;File.Delete(path);4.删除文件夹//using System.IO;Directory.Delete(path);5.删除一个目录下所有的文件夹//using System.IO;foreach (string dirStr in Directory.GetDirectories(path)){ DirectoryInfo dir new DirectoryInfo(dirStr); ArrayList foldersnew ArrayList(); FileSystemInfo[] fileArr dir.GetFileSystemInfos();for (int i 0; i folders.Count; i) { FileInfo f folders[i] as FileInfo;if (f null) { DirectoryInfo d folders[i] as DirectoryInfo; d.Delete(); } }}6.清空文件夹//using System.IO;Directory.Delete(path,true);Directory.CreateDirectory(path);7.读取文件//using System.IO;StreamReader s File.OpenText(path1);string str2 null;while ((str2 s.ReadLine()) ! null){ }s.Close();8.写入文件//using System.IO;FileInfo f new FileInfo(str);StreamWriter w f.CreateText();w.WriteLine(ReadOnlySpan);w.Close();9.写入随机文件//using System.IO;byte[] dataArray new byte[100000];//new Random().NextBytes(dataArray);using(FileStream FileStream new FileStream(path, FileMode.Create)){// Write the data to the file, byte by byte.for(int i 0; i dataArray.Length; i){ FileStream.WriteByte(dataArray[i]); }// Set the stream position to the beginning of the file. FileStream.Seek(0, SeekOrigin.Begin);// Read and verify the data.for(int i 0; i FileStream.Length; i){if(dataArray[i] ! FileStream.ReadByte()){ //写入数据错误return; } }//数据流FileStream.Name已验证}10.读取文件属性//using System.IO;FileInfo f new FileInfo(path);//f.CreationTime,f.FullNameif((f.Attributes FileAttributes.ReadOnly) ! 0){ path2}else{ path3}11.写入属性//using System.IO;FileInfo f new FileInfo(path);//设置只读f.Attributes myFile.Attributes | FileAttributes.ReadOnly;//设置可写f.Attributes myFile.Attributes ~FileAttributes.ReadOnly; 12.枚举一个文件夹中的所有文件夹//using System.IO;foreach (string path2 in Directory.GetDirectories(path)){ path3}13.复制文件夹string path (path2.LastIndexOf(\) path2.Length - 1) ? path2 : path2\;string parent Path.GetDirectoryName(path);Directory.CreateDirectory(path Path.GetFileName(path));DirectoryInfo dir new DirectoryInfo((path.LastIndexOf(\) path.Length - 1) ? path1 : path1 \);FileSystemInfo[] fileArr dir.GetFileSystemInfos();QueueFileSystemInfo Folders new QueueFileSystemInfo(dir.GetFileSystemInfos());while (Folders.Count0){ FileSystemInfo tmp Folders.Dequeue(); FileInfo f tmp as FileInfo;if (f null) { DirectoryInfo d tmp as DirectoryInfo; Directory.CreateDirectory(d.FullName.Replace((parent.LastIndexOf(\) parent.Length - 1) ? parent : parent \, path));foreach (FileSystemInfo fi in d.GetFileSystemInfos()) { Folders.Enqueue(fi); } }else { f.CopyTo(f.FullName.Replace(parent, path)); }}14.复制目录下所有的文件夹到另一个文件夹下DirectoryInfo d new DirectoryInfo(path);foreach (DirectoryInfo dirs in d.GetDirectories()){ QueueFileSystemInfo al new QueueFileSystemInfo(dirs.GetFileSystemInfos());while (al.Count 0) { FileSystemInfo temp al.Dequeue(); FileInfo file temp as FileInfo;if (file null) { DirectoryInfo directory temp as DirectoryInfo; Directory.CreateDirectory(path directory.Name);foreach (FileSystemInfo fsi in directory.GetFileSystemInfos()) al.Enqueue(fsi); }else File.Copy(file.FullName, path file.Name); }}15.移动文件夹string filename Path.GetFileName(path); string path(path2.LastIndexOf(\) path2.Length - 1) ? path2 : path2 \;if (Path.GetPathRoot(path) Path.GetPathRoot(path2)) Directory.Move(path, path filename);else { string parent Path.GetDirectoryName(path); Directory.CreateDirectory(path Path.GetFileName(path1)); DirectoryInfo dir new DirectoryInfo((path.LastIndexOf(\) path1.Length - 1) ? path1 : path1 \); FileSystemInfo[] fileArr dir.GetFileSystemInfos(); QueueFileSystemInfo Folders new QueueFileSystemInfo(dir.GetFileSystemInfos());while (Folders.Count 0) { FileSystemInfo tmp Folders.Dequeue(); FileInfo f tmp as FileInfo;if (f null) { DirectoryInfo d tmp as DirectoryInfo; DirectoryInfo dpath new DirectoryInfo(d.FullName.Replace((parent.LastIndexOf(\) parent.Length - 1) ? parent : parent \, path)); dpath.Create();foreach (FileSystemInfo fi in d.GetFileSystemInfos()) { Folders.Enqueue(fi); } }else { f.MoveTo(f.FullName.Replace(parent, path)); } } Directory.Delete(path, true); }16.移动目录下所有的文件夹到另一个目录下string filename Path.GetFileName(path);if (Path.GetPathRoot(path) Path.GetPathRoot(path2))foreach (string dir in Directory.GetDirectories(path1)) Directory.Move(dir, Path.Combine(path2,filename));else {foreach (string dir2 in Directory.GetDirectories(path1)) { string parent Path.GetDirectoryName(dir2); Directory.CreateDirectory(Path.Combine(path2, Path.GetFileName(dir2))); string dir (dir2.LastIndexOf(\) dir2.Length - 1) ? dir2 : dir2 \; DirectoryInfo dirdir new DirectoryInfo(dir); FileSystemInfo[] fileArr dirdir.GetFileSystemInfos(); QueueFileSystemInfo Folders new QueueFileSystemInfo(dirdir.GetFileSystemInfos());while (Folders.Count 0) { FileSystemInfo tmp Folders.Dequeue(); FileInfo f tmp as FileInfo;if (f null) { DirectoryInfo d tmp as DirectoryInfo; DirectoryInfo dpath new DirectoryInfo(d.FullName.Replace((parent.LastIndexOf(\) parent.Length - 1) ? parent : parent \, path2)); dpath.Create();foreach (FileSystemInfo fi in d.GetFileSystemInfos()) { Folders.Enqueue(fi); } }else { f.MoveTo(f.FullName.Replace(parent, path2)); } } dirdir.Delete(true); } }18.复制文件//using System.IO;File.Copy(path1,path2);19.复制一个文件夹下所有的文件到另一个目录//using System.IO;foreach (string fileStr in Directory.GetFiles(path1)) File.Copy((path1.LastIndexOf(\) path1.Length - 1) ? path1 Path.GetFileName(fileStr): path1 \Path.GetFileName(fileStr),(path2.LastIndexOf(\\) path2.Length - 1) ? path2 Path.GetFileName(fileStr): path2 \Path.GetFileName(fileStr));20.提取扩展名//using System.IO;string path2Path.GetExtension(path1);21.提取文件名//using System.IO;string path2Path.GetFileName(path1);22.提取文件路径//using System.IO;string path2Path.GetDirectoryName(path1);23.替换扩展名//using System.IO;File.ChangeExtension(path1,path2);24.追加路径//using System.IO;string path3Path.Combine(path1,path2);25.移动文件//using System.IO;File.Move(path1,path2\file.getname(path1));26.移动一个文件夹下所有文件到另一个目录foreach (string fileStr in Directory.GetFiles(path1)) File.Move((path1.LastIndexOf(\) path1.Length - 1) ? path1 Path.GetFileName(fileStr): path1 \Path.GetFileName(fileStr),(path2.LastIndexOf(\\) path2.Length - 1) ? path2 Path.GetFileName(fileStr): path2 \Path.GetFileName(fileStr));27.指定目录下搜索文件string fileNamepath1;string dirNamepath2; DirectoryInfo dircnew DirectoryInfo(dirName);foreach(FileInfo file in dirc.GetFiles()) {if(file.Name.IndexOf(fileName)-1)return file.FullName; }foreach(DirectoryInfo dir in dirc.GetDirectories()) { return GetFile(fileName,dir.FullName); }return找不到指定的文件; }28.获得当前路径string pathEnvironment.CurrentDirectory;你还有哪些文件操作的方法欢迎留言。版权声明本文来源于网友收集或网友提供仅供学习交流之用如果有侵权请转告版主或者留言本公众号立即删除。- EOF -技术群添加小编微信dotnet999公众号dotnet讲堂