C#最全的文件工具类FileHelper
当前位置：点晴教程→知识管理交流
→『 技术文档交流 』
using System;
using System.Collections.Generic; using System.Data; using System.IO; using System.Linq; using System.Text; using System.Web; namespace 落地页测试代码 { public class FileHelper { /// <summary> /// 检测指定目录是否存在 /// </summary> /// <param name="directoryPath">目录的绝对路径</param> /// <returns></returns> public static bool IsExistDirectory(string directoryPath) { return Directory.Exists(directoryPath); } /// <summary> /// 检测指定文件是否存在,如果存在则返回true。 /// </summary> /// <param name="filePath">文件的绝对路径</param> public static bool IsExistFile(string filePath) { return File.Exists(filePath); } /// <summary> /// 获取指定目录中所有文件列表 /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> public static string[] GetFileNames(string directoryPath) { //如果目录不存在，则抛出异常 if (!IsExistDirectory(directoryPath)) { throw new FileNotFoundException(); } //获取文件列表 return Directory.GetFiles(directoryPath); } /// <summary> /// 获取指定目录中所有子目录列表,若要搜索嵌套的子目录列表,请使用重载方法. /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> public static string[] GetDirectories(string directoryPath) { try { return Directory.GetDirectories(directoryPath); } catch (IOException ex) { throw ex; } } /// <summary> /// 获取指定目录及子目录中所有文件列表 /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> /// <param name="searchPattern">模式字符串，"*"代表0或N个字符，"?"代表1个字符。 /// 范例："Log*.xml"表示搜索所有以Log开头的Xml文件。</param> /// <param name="isSearchChild">是否搜索子目录</param> public static string[] GetFileNames(string directoryPath, string searchPattern, bool isSearchChild) { //如果目录不存在，则抛出异常 if (!IsExistDirectory(directoryPath)) { throw new FileNotFoundException(); } try { if (isSearchChild) { return Directory.GetFiles(directoryPath, searchPattern, SearchOption.AllDirectories); } else { return Directory.GetFiles(directoryPath, searchPattern, SearchOption.TopDirectoryOnly); } } catch (IOException ex) { throw ex; } } /// <summary> /// 检测指定目录是否为空 /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> public static bool IsEmptyDirectory(string directoryPath) { try { //判断是否存在文件 string[] fileNames = GetFileNames(directoryPath); if (fileNames.Length > 0) { return false; } //判断是否存在文件夹 string[] directoryNames = GetDirectories(directoryPath); if (directoryNames.Length > 0) { return false; } return true; } catch { //这里记录日志 //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message); return true; } } /// <summary> /// 检测指定目录中是否存在指定的文件,若要搜索子目录请使用重载方法. /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> /// <param name="searchPattern">模式字符串，"*"代表0或N个字符，"?"代表1个字符。 /// 范例："Log*.xml"表示搜索所有以Log开头的Xml文件。</param> public static bool Contains(string directoryPath, string searchPattern) { try { //获取指定的文件列表 string[] fileNames = GetFileNames(directoryPath, searchPattern, false); //判断指定文件是否存在 if (fileNames.Length == 0) { return false; } else { return true; } } catch (Exception ex) { throw new Exception(ex.Message); //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message); } } /// <summary> /// 检测指定目录中是否存在指定的文件 /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> /// <param name="searchPattern">模式字符串，"*"代表0或N个字符，"?"代表1个字符。 /// 范例："Log*.xml"表示搜索所有以Log开头的Xml文件。</param> /// <param name="isSearchChild">是否搜索子目录</param> public static bool Contains(string directoryPath, string searchPattern, bool isSearchChild) { try { //获取指定的文件列表 string[] fileNames = GetFileNames(directoryPath, searchPattern, true); //判断指定文件是否存在 if (fileNames.Length == 0) { return false; } else { return true; } } catch (Exception ex) { throw new Exception(ex.Message); //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message); } } /// <summary> /// 创建目录 /// </summary> /// <param name="dir">要创建的目录路径包括目录名</param> public static void CreateDir(string dir) { if (dir.Length == 0) return; if (!Directory.Exists(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir)) Directory.CreateDirectory(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir); } /// <summary> /// 删除目录 /// </summary> /// <param name="dir">要删除的目录路径和名称</param> public static void DeleteDir(string dir) { if (dir.Length == 0) return; if (Directory.Exists(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir)) Directory.Delete(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir); } /// <summary> /// 删除文件 /// </summary> /// <param name="file">要删除的文件路径和名称</param> public static void DeleteFile(string file) { if (File.Exists(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + file)) { File.Delete(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + file); } } /// <summary> /// 创建文件 /// </summary> /// <param name="dir">带后缀的文件名</param> /// <param name="pagestr">文件内容</param> public static void CreateFile(string dir, string pagestr) { dir = dir.Replace("/", "\\"); if (dir.IndexOf("\\") > -1) CreateDir(dir.Substring(0, dir.LastIndexOf("\\"))); StreamWriter sw = new StreamWriter(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir, false, System.Text.Encoding.GetEncoding("GB2312")); sw.Write(pagestr); sw.Close(); } /// <summary> /// 创建文件 /// </summary> /// <param name="path">路径</param> /// <param name="content">内容</param> public static void CreateFileContent(string path, string content) { FileInfo fi = new FileInfo(path); var di = fi.Directory; if (!di.Exists) { di.Create(); } StreamWriter sw = new StreamWriter(path, false, System.Text.Encoding.GetEncoding("GB2312")); sw.Write(content); sw.Close(); } /// <summary> /// 移动文件(剪贴--粘贴) /// </summary> /// <param name="dir1">要移动的文件的路径及全名(包括后缀)</param> /// <param name="dir2">文件移动到新的位置,并指定新的文件名</param> public static void MoveFile(string dir1, string dir2) { dir1 = dir1.Replace("/", "\\"); dir2 = dir2.Replace("/", "\\"); if (File.Exists(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir1)) File.Move(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir1, System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir2); } /// <summary> /// 复制文件 /// </summary> /// <param name="dir1">要复制的文件的路径已经全名(包括后缀)</param> /// <param name="dir2">目标位置,并指定新的文件名</param> public static void CopyFile(string dir1, string dir2) { dir1 = dir1.Replace("/", "\\"); dir2 = dir2.Replace("/", "\\"); if (File.Exists(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir1)) { File.Copy(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir1, System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\\" + dir2, true); } } /// <summary> /// 根据时间得到目录名yyyyMMdd /// </summary> /// <returns></returns> public static string GetDateDir() { return DateTime.Now.ToString("yyyyMMdd"); } /// <summary> /// 根据时间得到文件名HHmmssff /// </summary> /// <returns></returns> public static string GetDateFile() { return DateTime.Now.ToString("HHmmssff"); } /// <summary> /// 根据时间获取指定路径的 后缀名的 的所有文件 /// </summary> /// <param name="path">文件路径</param> /// <param name="Extension">后缀名 比如.txt</param> /// <returns></returns> public static DataRow[] GetFilesByTime(string path, string Extension) { if (Directory.Exists(path)) { string fielExts = string.Format("*{0}", Extension); string[] files = Directory.GetFiles(path, fielExts); if (files.Length > 0) { DataTable table = new DataTable(); table.Columns.Add(new DataColumn("filename", Type.GetType("System.String"))); table.Columns.Add(new DataColumn("createtime", Type.GetType("System.DateTime"))); for (int i = 0; i < files.Length; i++) { DataRow row = table.NewRow(); DateTime creationTime = File.GetCreationTime(files[i]); string fileName = Path.GetFileName(files[i]); row["filename"] = fileName; row["createtime"] = creationTime; table.Rows.Add(row); } return table.Select(string.Empty, "createtime desc"); } } return new DataRow[0]; } /// <summary> /// 复制文件夹(递归) /// </summary> /// <param name="varFromDirectory">源文件夹路径</param> /// <param name="varToDirectory">目标文件夹路径</param> public static void CopyFolder(string varFromDirectory, string varToDirectory) { Directory.CreateDirectory(varToDirectory); if (!Directory.Exists(varFromDirectory)) return; string[] directories = Directory.GetDirectories(varFromDirectory); if (directories.Length > 0) { foreach (string d in directories) { CopyFolder(d, varToDirectory + d.Substring(d.LastIndexOf("\\"))); } } string[] files = Directory.GetFiles(varFromDirectory); if (files.Length > 0) { foreach (string s in files) { File.Copy(s, varToDirectory + s.Substring(s.LastIndexOf("\\")), true); } } } /// <summary> /// 检查文件,如果文件不存在则创建 /// </summary> /// <param name="FilePath">路径,包括文件名</param> public static void ExistsFile(string FilePath) { //if(!File.Exists(FilePath)) //File.Create(FilePath); //以上写法会报错,详细解释请看下文......... if (!File.Exists(FilePath)) { FileStream fs = File.Create(FilePath); fs.Close(); } } /// <summary> /// 删除指定文件夹对应其他文件夹里的文件 /// </summary> /// <param name="varFromDirectory">指定文件夹路径</param> /// <param name="varToDirectory">对应其他文件夹路径</param> public static void DeleteFolderFiles(string varFromDirectory, string varToDirectory) { Directory.CreateDirectory(varToDirectory); if (!Directory.Exists(varFromDirectory)) return; string[] directories = Directory.GetDirectories(varFromDirectory); if (directories.Length > 0) { foreach (string d in directories) { DeleteFolderFiles(d, varToDirectory + d.Substring(d.LastIndexOf("\\"))); } } string[] files = Directory.GetFiles(varFromDirectory); if (files.Length > 0) { foreach (string s in files) { File.Delete(varToDirectory + s.Substring(s.LastIndexOf("\\"))); } } } /// <summary> /// 从文件的绝对路径中获取文件名( 包含扩展名 ) /// </summary> /// <param name="filePath">文件的绝对路径</param> public static string GetFileName(string filePath) { //获取文件的名称 FileInfo fi = new FileInfo(filePath); return fi.Name; } /// <summary> /// 复制文件参考方法,页面中引用 /// </summary> /// <param name="cDir">新路径</param> /// <param name="TempId">模板引擎替换编号</param> public static void CopyFiles(string cDir, string TempId) { //if (Directory.Exists(Request.PhysicalApplicationPath + "\\Controls")) //{ // string TempStr = string.Empty; // StreamWriter sw; // if (File.Exists(Request.PhysicalApplicationPath + "\\Controls\\Default.aspx")) // { // TempStr = File.ReadAllText(Request.PhysicalApplicationPath + "\\Controls\\Default.aspx"); // TempStr = TempStr.Replace("{$ChannelId$}", TempId); // sw = new StreamWriter(Request.PhysicalApplicationPath + "\\" + cDir + "\\Default.aspx", false, System.Text.Encoding.GetEncoding("GB2312")); // sw.Write(TempStr); // sw.Close(); // } // if (File.Exists(Request.PhysicalApplicationPath + "\\Controls\\Column.aspx")) // { // TempStr = File.ReadAllText(Request.PhysicalApplicationPath + "\\Controls\\Column.aspx"); // TempStr = TempStr.Replace("{$ChannelId$}", TempId); // sw = new StreamWriter(Request.PhysicalApplicationPath + "\\" + cDir + "\\List.aspx", false, System.Text.Encoding.GetEncoding("GB2312")); // sw.Write(TempStr); // sw.Close(); // } // if (File.Exists(Request.PhysicalApplicationPath + "\\Controls\\Content.aspx")) // { // TempStr = File.ReadAllText(Request.PhysicalApplicationPath + "\\Controls\\Content.aspx"); // TempStr = TempStr.Replace("{$ChannelId$}", TempId); // sw = new StreamWriter(Request.PhysicalApplicationPath + "\\" + cDir + "\\View.aspx", false, System.Text.Encoding.GetEncoding("GB2312")); // sw.Write(TempStr); // sw.Close(); // } // if (File.Exists(Request.PhysicalApplicationPath + "\\Controls\\MoreDiss.aspx")) // { // TempStr = File.ReadAllText(Request.PhysicalApplicationPath + "\\Controls\\MoreDiss.aspx"); // TempStr = TempStr.Replace("{$ChannelId$}", TempId); // sw = new StreamWriter(Request.PhysicalApplicationPath + "\\" + cDir + "\\DissList.aspx", false, System.Text.Encoding.GetEncoding("GB2312")); // sw.Write(TempStr); // sw.Close(); // } // if (File.Exists(Request.PhysicalApplicationPath + "\\Controls\\ShowDiss.aspx")) // { // TempStr = File.ReadAllText(Request.PhysicalApplicationPath + "\\Controls\\ShowDiss.aspx"); // TempStr = TempStr.Replace("{$ChannelId$}", TempId); // sw = new StreamWriter(Request.PhysicalApplicationPath + "\\" + cDir + "\\Diss.aspx", false, System.Text.Encoding.GetEncoding("GB2312")); // sw.Write(TempStr); // sw.Close(); // } // if (File.Exists(Request.PhysicalApplicationPath + "\\Controls\\Review.aspx")) // { // TempStr = File.ReadAllText(Request.PhysicalApplicationPath + "\\Controls\\Review.aspx"); // TempStr = TempStr.Replace("{$ChannelId$}", TempId); // sw = new StreamWriter(Request.PhysicalApplicationPath + "\\" + cDir + "\\Review.aspx", false, System.Text.Encoding.GetEncoding("GB2312")); // sw.Write(TempStr); // sw.Close(); // } // if (File.Exists(Request.PhysicalApplicationPath + "\\Controls\\Search.aspx")) // { // TempStr = File.ReadAllText(Request.PhysicalApplicationPath + "\\Controls\\Search.aspx"); // TempStr = TempStr.Replace("{$ChannelId$}", TempId); // sw = new StreamWriter(Request.PhysicalApplicationPath + "\\" + cDir + "\\Search.aspx", false, System.Text.Encoding.GetEncoding("GB2312")); // sw.Write(TempStr); // sw.Close(); // } //} } /// <summary> /// 创建一个目录 /// </summary> /// <param name="directoryPath">目录的绝对路径</param> public static void CreateDirectory(string directoryPath) { //如果目录不存在则创建该目录 if (!IsExistDirectory(directoryPath)) { Directory.CreateDirectory(directoryPath); } } /// <summary> /// 创建一个文件。 /// </summary> /// <param name="filePath">文件的绝对路径</param> public static void CreateFile(string filePath) { try { //如果文件不存在则创建该文件 if (!IsExistFile(filePath)) { //创建一个FileInfo对象 FileInfo file = new FileInfo(filePath); //创建文件 FileStream fs = file.Create(); //关闭文件流 fs.Close(); } } catch (Exception ex) { //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message); throw ex; } } /// <summary> /// 创建一个文件,并将字节流写入文件。 /// </summary> /// <param name="filePath">文件的绝对路径</param> /// <param name="buffer">二进制流数据</param> public static void CreateFile(string filePath, byte[] buffer) { try { //如果文件不存在则创建该文件 if (!IsExistFile(filePath)) { //创建一个FileInfo对象 FileInfo file = new FileInfo(filePath); //创建文件 FileStream fs = file.Create(); //写入二进制流 fs.Write(buffer, 0, buffer.Length); //关闭文件流 fs.Close(); } } catch (Exception ex) { //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message); throw ex; } } /// <summary> /// 获取文本文件的行数 /// </summary> /// <param name="filePath">文件的绝对路径</param> public static int GetLineCount(string filePath) { //将文本文件的各行读到一个字符串数组中 string[] rows = File.ReadAllLines(filePath); //返回行数 return rows.Length; } /// <summary> /// 获取一个文件的长度,单位为Byte /// </summary> /// <param name="filePath">文件的绝对路径</param> public static long GetFileSize(string filePath) { //创建一个文件对象 FileInfo fi = new FileInfo(filePath); //获取文件的大小 return fi.Length; } /// <summary> /// 计算文件大小函数(保留两位小数),Size为字节大小 /// </summary> /// <param name="size">初始文件大小</param> /// <returns></returns> public static string ToFileSize(long size) { string m_strSize = ""; long FactSize = 0; FactSize = size; if (FactSize < 1024.00) m_strSize = FactSize.ToString("F2") + " 字节"; else if (FactSize >= 1024.00 && FactSize < 1048576) m_strSize = (FactSize / 1024.00).ToString("F2") + " KB"; else if (FactSize >= 1048576 && FactSize < 1073741824) m_strSize = (FactSize / 1024.00 / 1024.00).ToString("F2") + " MB"; else if (FactSize >= 1073741824) m_strSize = (FactSize / 1024.00 / 1024.00 / 1024.00).ToString("F2") + " GB"; return m_strSize; } /// <summary> /// 获取指定目录及子目录中所有子目录列表 /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> /// <param name="searchPattern">模式字符串，"*"代表0或N个字符，"?"代表1个字符。 /// 范例："Log*.xml"表示搜索所有以Log开头的Xml文件。</param> /// <param name="isSearchChild">是否搜索子目录</param> public static string[] GetDirectories(string directoryPath, string searchPattern, bool isSearchChild) { try { if (isSearchChild) { return Directory.GetDirectories(directoryPath, searchPattern, SearchOption.AllDirectories); } else { return Directory.GetDirectories(directoryPath, searchPattern, SearchOption.TopDirectoryOnly); } } catch (IOException ex) { throw ex; } } /// <summary> /// 向文本文件中写入内容 /// </summary> /// <param name="filePath">文件的绝对路径</param> /// <param name="text">写入的内容</param> /// <param name="encoding">编码</param> public static void WriteText(string filePath, string text, Encoding encoding) { //向文件写入内容 File.WriteAllText(filePath, text, encoding); } /// <summary> /// 向文本文件的尾部追加内容 /// </summary> /// <param name="filePath">文件的绝对路径</param> /// <param name="content">写入的内容</param> public static void AppendText(string filePath, string content) { File.AppendAllText(filePath, content); } /// <summary> /// 将源文件的内容复制到目标文件中 /// </summary> /// <param name="sourceFilePath">源文件的绝对路径</param> /// <param name="destFilePath">目标文件的绝对路径</param> public static void Copy(string sourceFilePath, string destFilePath) { File.Copy(sourceFilePath, destFilePath, true); } /// <summary> /// 将文件移动到指定目录 /// </summary> /// <param name="sourceFilePath">需要移动的源文件的绝对路径</param> /// <param name="descDirectoryPath">移动到的目录的绝对路径</param> public static void Move(string sourceFilePath, string descDirectoryPath) { //获取源文件的名称 string sourceFileName = GetFileName(sourceFilePath); if (IsExistDirectory(descDirectoryPath)) { //如果目标中存在同名文件,则删除 if (IsExistFile(descDirectoryPath + "\\" + sourceFileName)) { DeleteFile(descDirectoryPath + "\\" + sourceFileName); } //将文件移动到指定目录 File.Move(sourceFilePath, descDirectoryPath + "\\" + sourceFileName); } } /// <summary> /// 从文件的绝对路径中获取文件名( 不包含扩展名 ) /// </summary> /// <param name="filePath">文件的绝对路径</param> public static string GetFileNameNoExtension(string filePath) { //获取文件的名称 FileInfo fi = new FileInfo(filePath); return fi.Name.Split('.')[0]; } /// <summary> /// 从文件的绝对路径中获取扩展名 /// </summary> /// <param name="filePath">文件的绝对路径</param> public static string GetExtension(string filePath) { //获取文件的名称 FileInfo fi = new FileInfo(filePath); return fi.Extension; } /// <summary> /// 清空指定目录下所有文件及子目录,但该目录依然保存. /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> public static void ClearDirectory(string directoryPath) { directoryPath = HttpContext.Current.Server.MapPath(directoryPath); if (IsExistDirectory(directoryPath)) { //删除目录中所有的文件 string[] fileNames = GetFileNames(directoryPath); for (int i = 0; i < fileNames.Length; i++) { DeleteFile(fileNames[i]); } //删除目录中所有的子目录 string[] directoryNames = GetDirectories(directoryPath); for (int i = 0; i < directoryNames.Length; i++) { DeleteDirectory(directoryNames[i]); } } } /// <summary> /// 清空文件内容 /// </summary> /// <param name="filePath">文件的绝对路径</param> public static void ClearFile(string filePath) { //删除文件 File.Delete(filePath); //重新创建该文件 CreateFile(filePath); } /// <summary> /// 删除指定目录及其所有子目录 /// </summary> /// <param name="directoryPath">指定目录的绝对路径</param> public static void DeleteDirectory(string directoryPath) { directoryPath = HttpContext.Current.Server.MapPath(directoryPath); if (IsExistDirectory(directoryPath)) { Directory.Delete(directoryPath, true); } } /// <summary> /// 本地路径 /// </summary> /// <param name="path"></param> /// <returns></returns> public static string MapPath(string path) { return HttpContext.Current.Server.MapPath(path); } } } 该文章在 2021/1/30 12:53:12 编辑过 |
关键字查询
相关文章
正在查询... 
|
400 186 1886
