C#遍历文件夹

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namespace

using System.IO;

遍历文件夹下的子文件和子文件夹

DirectoryInfo dirInfo = new DirectoryInfo(@"D:\TestDir");// 遍历子文件FileInfo[] fileInfos = dirInfo.GetFiles();foreach (FileInfo fileInfo in fileInfos){    Console.WriteLine(fileInfo.Name);    Console.WriteLine(fileInfo.FullName);    Console.WriteLine(fileInfo.Extension);}// 遍历子文件夹DirectoryInfo[] subDirInfos = dirInfo.GetDirectories();foreach (DirectoryInfo subDirInfo in subDirInfos){    Console.WriteLine(subDirInfo.Name);    Console.WriteLine(subDirInfo.FullName);}

遍历文件夹下所有层级的文件和文件夹

DirectoryInfo dirInfo = new DirectoryInfo(@"D:\TestDir");List<FileInfo> subFileInfos = new List<FileInfo>();List<DirectoryInfo> subDirInfos = new List<DirectoryInfo>();ListAllLevelSubDirAndFile(dirInfo, ref subFileInfos, ref subDirInfos);foreach (FileInfo subFileInfo in subFileInfos){    Console.WriteLine(subFileInfo.Name);}foreach (DirectoryInfo subDirInfo in subDirInfos){    Console.WriteLine(subDirInfo.Name);}public static void ListAllLevelSubDirAndFile(    DirectoryInfo dirInfo,    ref List<FileInfo> subFileInfoList,    ref List<DirectoryInfo> subDirInfoList){    if (dirInfo == null)    {        return;    }    FileInfo[] fileInfos = dirInfo.GetFiles();    foreach (FileInfo fileInfo in fileInfos)    {        subFileInfoList.Add(fileInfo);    }    DirectoryInfo[] subDirInfos = dirInfo.GetDirectories();    foreach (DirectoryInfo subDirInfo in subDirInfos)    {        subDirInfoList.Add(subDirInfo);        ListAllLevelSubDirAndFile(subDirInfo, ref subFileInfoList, ref subDirInfoList);    }}

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