MSDN的File类
File类在MSDN：https://msdn.microsoft.com/zh-cn/library/system.io.file_methods(v=vs.110).aspx
FileHelper.cs
FileHelper提供的功能：
- 递归获取指定目录下所有的文件
- 获取指定目录下所有的子目录
using System;
using System.Collections.Generic;
using System.IO; public class FileHelper
{
/// <summary>
/// 递归获取所有的目录
/// </summary>
/// <param name="strPath"></param>
/// <param name="lstDirect"></param>
public static void GetAllDirectorys(string strPath, ref List<string> lstDirect)
{
if (Directory.Exists(strPath) == false)
{
Console.WriteLine("请检查，路径不存在：{0}",strPath);
return;
}
DirectoryInfo diFliles = new DirectoryInfo(strPath);
DirectoryInfo[] directories = diFliles.GetDirectories();
var max = directories.Length;
for (int dirIdx = ; dirIdx < max; dirIdx++)
{
try
{
var dir = directories[dirIdx];
//dir.FullName是某个子目录的绝对地址，把它记录起来
lstDirect.Add(dir.FullName);
GetAllDirectorys(dir.FullName, ref lstDirect);
}
catch
{
continue;
}
}
} /// <summary>
/// 遍历当前目录及子目录，获取所有文件
/// </summary>
/// <param name="strPath">文件路径</param>
/// <returns>所有文件</returns>
public static IList<FileInfo> GetAllFiles(string strPath)
{
List<FileInfo> lstFiles = new List<FileInfo>();
List<string> lstDirect = new List<string>();
lstDirect.Add(strPath);
DirectoryInfo diFliles = null;
GetAllDirectorys(strPath, ref lstDirect); var max = lstDirect.Count;
for (int idx = ; idx < max; idx++)
{
try
{
diFliles = new DirectoryInfo(lstDirect[idx]);
lstFiles.AddRange(diFliles.GetFiles());
}
catch
{
continue;
}
}
return lstFiles;
}
}
File类实用方法
获取父目录
var currentDirectory = System.Environment.CurrentDirectory;//当前程序的目录
var parentDirPath = string.Empty;
var parentDir = new DirectoryInfo(currentDirectory).Parent;
if (parentDir != null)
{
parentDirPath = parentDir.FullName; //上一级目录
}
else
{
Console.WriteLine("ERROR：当前目录没有父级目录");
}
读取和修改文本内容
//读取所有内容
var fileContent = File.ReadAllText(versionFileName);
//修改文本内容
File.WriteAllText(versionFileName, strNewVer);
方法二
参考文档：https://msdn.microsoft.com/zh-cn/library/8bh11f1k.aspx
using (var sw = new StreamWriter(FilePath))
{
sw.Write(sb.ToString());
}
创建文本并写入内容
using (StreamWriter streamWriter = File.CreateText(resFileName))
{
var fileInfos = FileHelper.GetAllFiles(targetPath);
var fileMax = fileInfos.Count;
for (int fileIdx = ; fileIdx < fileMax; fileIdx++)
{
var fileInfo = fileInfos[fileIdx];
if (fileInfo.Extension != ".meta")
{
var filePath = fileInfo.FullName.Replace(parentDirPath, "");
filePath = filePath.Replace(@"\", "/");
var fileStr = string.Concat(filePath, "&", HashHelper.GetSHA1(fileInfo.FullName));
streamWriter.WriteLine(fileStr);
Console.WriteLine(fileStr);
if (fileLine < Int64.MaxValue)
{
fileLine += ;
}
else
{
overflowMsg = "文件行数太多啦，未统计。";
}
}
}
}
@ 文件路径
var filePath = @"d:\Tools\"; 等价于 var filePath = "d:\\Tools\\";