递归文件搜索缺少子目录

Question

我有一个与此类似的文件夹结构

  

d：\主\   
d：\主\ Folder1中\

我的代码将扫描D:\Main\目录中的所有文件，但它会遗漏D:\Main\Folder1\子目录。我认为设置SearchOption.AllDirectories会扫描所有子目录，但对我来说并非如此，因为当我的foreach循环被点击时，计数总是等于0

我需要更改什么才能执行此代码？

static void MoveFiles()
{
    String directoryName = "D:\\_TestData";
    DirectoryInfo dirInfo = new DirectoryInfo(directoryName);
    if (dirInfo.Exists == false)
        Directory.CreateDirectory(directoryName);

    List<String> MyMusicFiles = Directory.GetFiles("D:\\_FinishedData", "*.*", SearchOption.AllDirectories).Where(s => s.EndsWith(".mp4") || s.EndsWith(".avi") || s.EndsWith(".mkv ")).ToList();

    foreach (string file in MyMusicFiles)
    {
        FileInfo mFile = new FileInfo(file); 
        if (new FileInfo(dirInfo + "\\" + mFile.Name).Exists == false)     
           mFile.MoveTo(dirInfo + "\\" + mFile.Name); 
    }
}

@Renee这些是我得到的编译错误

Answer 1

如果出现异常，您的算法可能会错过文件夹。通常，异常是由于没有访问文件或文件夹的权限引起的。下面的代码可用于允许算法在异常后继续：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using System.IO;

namespace WriteFileNamesXml
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";
        const string FOLDER = @"c:\temp";
        static XmlWriter writer = null;
        static void Main(string[] args)
        {
            XmlWriterSettings settings = new XmlWriterSettings();
            settings.Indent = true;

            writer = XmlWriter.Create(FILENAME, settings);
            writer.WriteStartDocument(true);

            DirectoryInfo info = new DirectoryInfo(FOLDER);
            WriteTree(info);

            writer.WriteEndDocument();
            writer.Flush();
            writer.Close();


        }
        static long WriteTree(DirectoryInfo info)
        {
            long size = 0;
            writer.WriteStartElement("Folder");
            try
            {
                writer.WriteAttributeString("name", info.Name);
                writer.WriteAttributeString("numberSubFolders", info.GetDirectories().Count().ToString());
                writer.WriteAttributeString("numberFiles", info.GetFiles().Count().ToString());
                writer.WriteAttributeString("date", info.LastWriteTime.ToString());


                foreach (DirectoryInfo childInfo in info.GetDirectories())
                {
                    size += WriteTree(childInfo);
                }

            }
            catch (Exception ex)
            {
                string errorMsg = string.Format("Exception Folder : {0}, Error : {1}", info.FullName, ex.Message);
                Console.WriteLine(errorMsg);
                writer.WriteElementString("Error", errorMsg);
            }

            FileInfo[] fileInfo = null;
            try
            {
                fileInfo = info.GetFiles();
            }
            catch (Exception ex)
            {
                string errorMsg = string.Format("Exception FileInfo : {0}, Error : {1}", info.FullName, ex.Message);
                Console.WriteLine(errorMsg);
                writer.WriteElementString("Error", errorMsg);
            }

            if (fileInfo != null)
            {
                foreach (FileInfo finfo in fileInfo)
                {
                    try
                    {
                        writer.WriteStartElement("File");
                        writer.WriteAttributeString("name", finfo.Name);
                        writer.WriteAttributeString("size", finfo.Length.ToString());
                        writer.WriteAttributeString("date", info.LastWriteTime.ToString());
                        writer.WriteEndElement();
                        size += finfo.Length;
                    }
                    catch (Exception ex)
                    {
                        string errorMsg = string.Format("Exception File : {0}, Error : {1}", finfo.FullName, ex.Message);
                        Console.WriteLine(errorMsg);
                        writer.WriteElementString("Error", errorMsg);
                    }
                }
            }

            writer.WriteElementString("size", size.ToString());
            writer.WriteEndElement();
            return size;

        }
    }
}