在线时间:8:00-16:00
迪恩网络APP
随时随地掌握行业动态
扫描二维码
关注迪恩网络微信公众号
C#中File类的常用读取与写入文件方法的使用: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/99693983 注: 博客主页: 实现获取文件的扩展名/// <summary> /// 获取文件的扩展名 /// </summary> /// <param name="filename">完整文件名</param> /// <returns>返回扩展名</returns> public static string GetPostfixStr(string filename) { int num = filename.LastIndexOf("."); int length = filename.Length; return filename.Substring(num, length - num); }
读取文件内容
/// <summary> /// 读取文件内容 /// </summary> /// <param name="path">要读取的文件路径</param> /// <returns>返回文件内容</returns> public static string ReadFile(string path) { string result; if (!System.IO.File.Exists(path)) { result = "不存在相应的目录"; } else { System.IO.FileStream stream = new System.IO.FileStream(path, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite); System.IO.StreamReader streamReader = new System.IO.StreamReader(stream, System.Text.Encoding.Default); result = streamReader.ReadToEnd(); streamReader.Close(); streamReader.Dispose(); } return result; }
指定编码格式读取文件内容
/// <summary> /// 读取文件内容 /// </summary> /// <param name="path">要读取的文件路径</param> /// <param name="encoding">编码格式</param> /// <returns>返回文件内容</returns> public static string ReadFile(string path, System.Text.Encoding encoding) { string result; if (!System.IO.File.Exists(path)) { result = "不存在相应的目录"; } else { System.IO.FileStream stream = new System.IO.FileStream(path, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite); System.IO.StreamReader streamReader = new System.IO.StreamReader(stream, encoding); result = streamReader.ReadToEnd(); streamReader.Close(); streamReader.Dispose(); } return result; }
向指定文件写入内容
/// <summary> /// 向指定文件写入内容 /// </summary> /// <param name="path">要写入内容的文件完整路径</param> /// <param name="content">要写入的内容</param> public static void WriteFile(string path, string content) { try { object obj = new object(); if (!System.IO.File.Exists(path)) { System.IO.FileStream fileStream = System.IO.File.Create(path); fileStream.Close(); } lock (obj) { using (System.IO.StreamWriter streamWriter = new System.IO.StreamWriter(path, false, System.Text.Encoding.Default)) { streamWriter.WriteLine(content); streamWriter.Close(); streamWriter.Dispose(); } } } catch (System.Exception ex) { ICSharpCode.Core.LoggingService<FileHelper>.Error(String.Format("写入文件{0}异常:{1}", path, ex.Message), ex); } }
指定编码格式向文件写入内容
/// <summary> /// 向指定文件写入内容 /// </summary> /// <param name="path">要写入内容的文件完整路径</param> /// <param name="content">要写入的内容</param> /// <param name="encoding">编码格式</param> public static void WriteFile(string path, string content, System.Text.Encoding encoding) { try { object obj = new object(); if (!System.IO.File.Exists(path)) { System.IO.FileStream fileStream = System.IO.File.Create(path); fileStream.Close(); } lock (obj) { using (System.IO.StreamWriter streamWriter = new System.IO.StreamWriter(path, false, encoding)) { streamWriter.WriteLine(content); streamWriter.Close(); streamWriter.Dispose(); } } } catch (System.Exception ex) { ICSharpCode.Core.LoggingService<FileHelper>.Error(String.Format("写入文件{0}异常:{1}", path, ex.Message), ex); } }
文件复制/// <summary> /// 文件复制 /// </summary> /// <param name="orignFile">源文件完整路径</param> /// <param name="newFile">目标文件完整路径</param> public static void FileCoppy(string orignFile, string newFile) { System.IO.File.Copy(orignFile, newFile, true); }
文件删除
/// <summary> /// 删除文件 /// </summary> /// <param name="path">要删除的文件的完整路径</param> public static void FileDel(string path) { System.IO.File.Delete(path); }
文件移动
/// <summary> /// 文件移动(剪贴->粘贴) /// </summary> /// <param name="orignFile">源文件的完整路径</param> /// <param name="newFile">目标文件完整路径</param> public static void FileMove(string orignFile, string newFile) { System.IO.File.Move(orignFile, newFile); }
判断一组文件是否都存在
/// <summary> /// 判断一组文件是否都存在 /// </summary> /// <param name="filePathList">文件路径List</param> /// <returns>文件是否全部存在</returns> public static bool IsFilesExist(List<string> filePathList) { bool isAllExist = true; foreach(string filePath in filePathList) { if(!File.Exists(filePath)) { isAllExist = false; } } return isAllExist; }
创建目录
/// <summary> /// 创建目录 /// </summary> /// <param name="orignFolder">当前目录</param> /// <param name="newFloder">要创建的目录名</param> public static void FolderCreate(string orignFolder, string newFloder) { System.IO.Directory.SetCurrentDirectory(orignFolder); System.IO.Directory.CreateDirectory(newFloder); }
删除目录
/// <summary> /// 删除目录 /// </summary> /// <param name="dir">要删除的目录</param> public static void DeleteFolder(string dir) { if (System.IO.Directory.Exists(dir)) { string[] fileSystemEntries = System.IO.Directory.GetFileSystemEntries(dir); for (int i = 0; i < fileSystemEntries.Length; i++) { string text = fileSystemEntries[i]; if (System.IO.File.Exists(text)) { System.IO.File.Delete(text); } else { FileHelper.DeleteFolder(text); } } System.IO.Directory.Delete(dir); } }
目录内容复制
/// <summary> /// 目录内容复制 /// </summary> /// <param name="srcPath">源目录</param> /// <param name="aimPath">目标目录</param> public static void CopyDir(string srcPath, string aimPath) { try { if (aimPath[aimPath.Length - 1] != System.IO.Path.DirectorySeparatorChar) { aimPath += System.IO.Path.DirectorySeparatorChar; } if (!System.IO.Directory.Exists(aimPath)) { System.IO.Directory.CreateDirectory(aimPath); } string[] fileSystemEntries = System.IO.Directory.GetFileSystemEntries(srcPath); string[] array = fileSystemEntries; for (int i = 0; i < array.Length; i++) { string text = array[i]; if (System.IO.Directory.Exists(text)) { FileHelper.CopyDir(text, aimPath + System.IO.Path.GetFileName(text)); } else { System.IO.File.Copy(text, aimPath + System.IO.Path.GetFileName(text), true); } } } catch (System.Exception ex) { throw new System.Exception(ex.ToString()); } }
|
2023-10-27
2022-08-15
2022-08-17
2022-09-23
2022-08-13
请发表评论