C# 遍历目录下所有文件夹下的文件

private void FindAllFiles(string fileDirectory)

{

DirectoryInfo diSource = new DirectoryInfo(fileDirectory);

FileSystemInfo[] fsi = diSource.GetFileSystemInfos();

FileInfo fi;

try

{

for (int i = 0; i < fsi.Length; i++)

{

//不是目录，查看文件属性；是目录，继续遍历。

if (Directory.Exists(fsi[i].FullName) == false)

{

fi = new FileInfo(fsi[i].FullName);

//判断文件类型，进行相应的后继操作。

if (fi.Extension == ".txt")

{

Console.WriteLine(fsi[i].FullName);

}

}

else

{

FindAllFiles(fsi[i].FullName);

}

}

}

catch (Exception ex)

{

Console.WriteLine(ex.Message);

}