C#遍历文件夹

最新推荐文章于 2025-06-08 07:45:26 发布

HisinWang

最新推荐文章于 2025-06-08 07:45:26 发布

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分类专栏： C# 文章标签： 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);
    }
}