ab56a9bcf7
SVN-Revision: r240
547 lines
20 KiB
C#
547 lines
20 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.IO;
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namespace Lskj.TxtFileRead
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{
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/// <summary>
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/// 文件操作帮助类
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/// </summary>
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public class FileUtilHelper
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{
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#region 检测指定目录是否存在
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/// <summary>
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/// 检测指定目录是否存在,如果存在则返回true。
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/// </summary>
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/// <param name="directoryPath">目录的绝对路径</param>
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public static bool IsExistDirectory(string directoryPath)
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{
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return Directory.Exists(directoryPath);
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}
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#endregion
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#region 检测指定文件是否存在
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/// <summary>
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/// 检测指定文件是否存在,如果存在则返回true。
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static bool IsExistFile(string filePath)
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{
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return File.Exists(filePath);
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}
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#endregion
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#region 检测指定目录是否为空
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/// <summary>
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/// 检测指定目录是否为空
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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public static bool IsEmptyDirectory(string directoryPath)
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{
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try
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{
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//判断是否存在文件
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string[] fileNames = GetFileNames(directoryPath);
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if (fileNames.Length > 0)
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{
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return false;
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}
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//判断是否存在文件夹
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string[] directoryNames = GetDirectories(directoryPath);
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if (directoryNames.Length > 0)
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{
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return false;
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}
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return true;
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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#endregion
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#region 检测指定目录中是否存在指定的文件
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/// <summary>
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/// 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.
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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/// <param name="searchPattern">模式字符串,"*"代表0或N个字符,"?"代表1个字符。
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/// 范例:"Log*.xml"表示搜索所有以Log开头的Xml文件。</param>
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public static bool IsContainsFile(string directoryPath, string searchPattern)
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{
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try
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{
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//获取指定的文件列表
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string[] fileNames = GetFileNames(directoryPath, searchPattern, false);
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//判断指定文件是否存在
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if (fileNames.Length == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 检测指定目录中是否存在指定的文件
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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/// <param name="searchPattern">模式字符串,"*"代表0或N个字符,"?"代表1个字符。
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/// 范例:"Log*.xml"表示搜索所有以Log开头的Xml文件。</param>
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/// <param name="isSearchChild">是否搜索子目录</param>
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public static bool IsContainsFile(string directoryPath, string searchPattern, bool isSearchChild)
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{
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try
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{
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//获取指定的文件列表
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string[] fileNames = GetFileNames(directoryPath, searchPattern, true);
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//判断指定文件是否存在
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if (fileNames.Length == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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#endregion
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#region 创建一个目录
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/// <summary>
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/// 创建一个目录
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/// </summary>
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/// <param name="directoryPath">目录的绝对路径</param>
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public static void CreateDirectory(string directoryPath)
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{
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//如果目录不存在则创建该目录
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if (!IsExistDirectory(directoryPath))
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{
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Directory.CreateDirectory(directoryPath);
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}
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}
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#endregion
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#region 创建一个文件
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/// <summary>
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/// 创建一个文件
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static void CreateFile(string filePath)
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{
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try
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{
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//如果文件不存在则创建该文件
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if (!IsExistFile(filePath))
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{
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//创建一个FileInfo对象
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FileInfo file = new FileInfo(filePath);
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//创建文件
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FileStream fs = file.Create();
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//关闭文件流
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fs.Close();
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}
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 创建一个文件,并将字节流写入文件。
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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/// <param name="buffer">二进制流数据</param>
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public static void CreateFile(string filePath, byte[] buffer)
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{
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try
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{
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//如果文件不存在则创建该文件
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if (!IsExistFile(filePath))
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{
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//创建一个FileInfo对象
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FileInfo file = new FileInfo(filePath);
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//创建文件
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FileStream fs = file.Create();
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//写入二进制流
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fs.Write(buffer, 0, buffer.Length);
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//关闭文件流
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fs.Close();
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}
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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#endregion
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#region 获取文本文件的行数
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/// <summary>
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/// 获取文本文件的行数
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static int GetLineCount(string filePath)
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{
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//将文本文件的各行读到一个字符串数组中
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string[] rows = File.ReadAllLines(filePath);
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//返回行数
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return rows.Length;
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}
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#endregion
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#region 获取一个文件的长度
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/// <summary>
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/// 获取一个文件的长度,单位为Byte
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static int GetFileSize(string filePath)
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{
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//创建一个文件对象
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FileInfo fi = new FileInfo(filePath);
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//获取文件的大小
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return (int)fi.Length;
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}
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#endregion
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#region 获取指定目录中的文件列表
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/// <summary>
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/// 获取指定目录中所有文件列表
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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public static string[] GetFileNames(string directoryPath)
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{
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//如果目录不存在,则抛出异常
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if (!IsExistDirectory(directoryPath))
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{
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throw new FileNotFoundException();
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}
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//获取文件列表
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return Directory.GetFiles(directoryPath);
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}
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/// <summary>
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/// 获取指定目录及子目录中所有文件列表
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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/// <param name="searchPattern">模式字符串,"*"代表0或N个字符,"?"代表1个字符。
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/// 范例:"Log*.xml"表示搜索所有以Log开头的Xml文件。</param>
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/// <param name="isSearchChild">是否搜索子目录</param>
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public static string[] GetFileNames(string directoryPath, string searchPattern, bool isSearchChild)
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{
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//如果目录不存在,则抛出异常
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if (!IsExistDirectory(directoryPath))
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{
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throw new FileNotFoundException();
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}
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try
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{
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if (isSearchChild)
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{
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return Directory.GetFiles(directoryPath, searchPattern, SearchOption.AllDirectories);
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}
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else
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{
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return Directory.GetFiles(directoryPath, searchPattern, SearchOption.TopDirectoryOnly);
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}
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}
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catch (IOException ex)
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{
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throw ex;
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}
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}
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#endregion
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#region 获取指定目录中的子目录列表
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/// <summary>
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/// 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.
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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public static string[] GetDirectories(string directoryPath)
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{
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try
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{
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return Directory.GetDirectories(directoryPath);
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}
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catch (IOException ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 获取指定目录及子目录中所有子目录列表
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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/// <param name="searchPattern">模式字符串,"*"代表0或N个字符,"?"代表1个字符。
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/// 范例:"Log*.xml"表示搜索所有以Log开头的Xml文件。</param>
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/// <param name="isSearchChild">是否搜索子目录</param>
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public static string[] GetDirectories(string directoryPath, string searchPattern, bool isSearchChild)
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{
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try
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{
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if (isSearchChild)
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{
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return Directory.GetDirectories(directoryPath, searchPattern, SearchOption.AllDirectories);
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}
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else
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{
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return Directory.GetDirectories(directoryPath, searchPattern, SearchOption.TopDirectoryOnly);
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}
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}
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catch (IOException ex)
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{
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throw ex;
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}
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}
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#endregion
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#region 向文本文件写入内容
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/// <summary>
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/// 向文本文件中写入内容
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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/// <param name="content">写入的内容</param>
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public static void WriteText(string filePath, string content)
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{
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//向文件写入内容
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File.WriteAllText(filePath, content);
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}
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#endregion
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#region 向文本文件的尾部追加内容
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/// <summary>
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/// 向文本文件的尾部追加内容
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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/// <param name="content">写入的内容</param>
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public static void AppendText(string filePath, string content)
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{
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File.AppendAllText(filePath, content);
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}
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#endregion
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#region 将现有文件的内容复制到新文件中
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/// <summary>
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/// 将源文件的内容复制到目标文件中
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/// </summary>
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/// <param name="sourceFilePath">源文件的绝对路径</param>
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/// <param name="destFilePath">目标文件的绝对路径</param>
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public static void Copy(string sourceFilePath, string destFilePath)
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{
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File.Copy(sourceFilePath, destFilePath, true);
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}
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#endregion
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#region 将文件移动到指定目录
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/// <summary>
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/// 将文件移动到指定目录
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/// </summary>
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/// <param name="sourceFilePath">需要移动的源文件的绝对路径</param>
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/// <param name="descDirectoryPath">移动到的目录的绝对路径</param>
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public static bool Move(string sourceFilePath, string descDirectoryPath)
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{
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//获取源文件的名称
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string sourceFileName = GetFileName(sourceFilePath);
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if (IsExistDirectory(descDirectoryPath))
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{
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//如果目标中存在同名文件,则删除
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if (IsExistFile(descDirectoryPath + "\\" + sourceFileName))
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{
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DeleteFile(descDirectoryPath + "\\" + sourceFileName);
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}
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//将文件移动到指定目录
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File.Move(sourceFilePath, descDirectoryPath + "\\" + sourceFileName);
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return true;
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}
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return false;
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}
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#endregion
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#region 从文件的绝对路径中获取文件名( 包含扩展名 )
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/// <summary>
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/// 从文件的绝对路径中获取文件名( 包含扩展名 )
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static string GetFileName(string filePath)
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{
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//获取文件的名称
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FileInfo fi = new FileInfo(filePath);
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return fi.Name;
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}
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#endregion
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#region 从文件的绝对路径中获取文件名( 不包含扩展名 )
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/// <summary>
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/// 从文件的绝对路径中获取文件名( 不包含扩展名 )
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static string GetFileNameNoExtension(string filePath)
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{
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//获取文件的名称
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FileInfo fi = new FileInfo(filePath);
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return fi.Name.Split('.')[0];
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}
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#endregion
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#region 从文件的绝对路径中获取扩展名
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/// <summary>
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/// 从文件的绝对路径中获取扩展名
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static string GetExtension(string filePath)
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{
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//获取文件的名称
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FileInfo fi = new FileInfo(filePath);
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return fi.Extension;
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}
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#endregion
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#region 将文件读取到缓冲区中
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/// <summary>
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/// 将文件读取到缓冲区中
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static byte[] FileToBytes(string filePath)
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{
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//获取文件的大小
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int fileSize = GetFileSize(filePath);
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//创建一个临时缓冲区
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byte[] buffer = new byte[fileSize];
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//创建一个文件流
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FileInfo fi = new FileInfo(filePath);
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FileStream fs = fi.Open(FileMode.Open);
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try
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{
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//将文件流读入缓冲区
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fs.Read(buffer, 0, fileSize);
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return buffer;
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}
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catch (IOException ex)
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{
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throw ex;
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}
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finally
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{
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//关闭文件流
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fs.Close();
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}
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}
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#endregion
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#region 将文件读取到字符串中
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/// <summary>
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/// 将文件读取到字符串中
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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/// <param name="encoding">字符编码</param>
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public static string FileToString(string filePath, Encoding encoding)
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{
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//创建流读取器
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StreamReader reader = new StreamReader(filePath, encoding);
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try
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{
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//读取流
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return reader.ReadToEnd();
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}
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catch (Exception ex)
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{
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throw ex;
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}
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finally
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{
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//关闭流读取器
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reader.Close();
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}
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}
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#endregion
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#region 清空指定目录
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/// <summary>
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/// 清空指定目录下所有文件及子目录,但该目录依然保存.
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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public static void ClearDirectory(string directoryPath)
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{
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if (IsExistDirectory(directoryPath))
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{
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//删除目录中所有的文件
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string[] fileNames = GetFileNames(directoryPath);
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for (int i = 0; i < fileNames.Length; i++)
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{
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DeleteFile(fileNames[i]);
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}
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//删除目录中所有的子目录
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string[] directoryNames = GetDirectories(directoryPath);
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for (int i = 0; i < directoryNames.Length; i++)
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{
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DeleteDirectory(directoryNames[i]);
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}
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}
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}
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#endregion
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#region 清空文件内容
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/// <summary>
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/// 清空文件内容
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static void ClearFile(string filePath)
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{
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//删除文件
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File.Delete(filePath);
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//重新创建该文件
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CreateFile(filePath);
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}
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#endregion
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#region 删除指定文件
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/// <summary>
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/// 删除指定文件
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static void DeleteFile(string filePath)
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{
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if (IsExistFile(filePath))
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{
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File.Delete(filePath);
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}
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}
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#endregion
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#region 删除指定目录
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/// <summary>
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/// 删除指定目录及其所有子目录
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/// </summary>
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/// <param name="directoryPath">指定目录的绝对路径</param>
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public static void DeleteDirectory(string directoryPath)
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{
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if (IsExistDirectory(directoryPath))
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{
|
|
Directory.Delete(directoryPath, true);
|
|
}
|
|
}
|
|
#endregion
|
|
#region 将字节(B)转换成兆(M),并保留两位小数
|
|
/// <summary>
|
|
/// 将字节(B)转换成兆(M),并保留两位小数
|
|
/// </summary>
|
|
public static string ConvertByteToMB(int byteLength)
|
|
{
|
|
return Math.Round((double)byteLength / (1024 * 1024), 2).ToString() + "M";
|
|
}
|
|
#endregion
|
|
#region 去除文件名中的特殊字符
|
|
public static string ReplaceBadCharOfFileName(string fileName)
|
|
{
|
|
fileName = fileName.Replace("\\", string.Empty);
|
|
fileName = fileName.Replace("/", string.Empty);
|
|
fileName = fileName.Replace(":", string.Empty);
|
|
fileName = fileName.Replace("*", string.Empty);
|
|
fileName = fileName.Replace("?", string.Empty);
|
|
fileName = fileName.Replace("\"", string.Empty);
|
|
fileName = fileName.Replace("<", string.Empty);
|
|
fileName = fileName.Replace(">", string.Empty);
|
|
fileName = fileName.Replace("|", string.Empty);
|
|
fileName = fileName.Replace(" ", string.Empty);
|
|
return fileName.ToString();
|
|
}
|
|
#endregion
|
|
}
|
|
}
|