如何获取文件夹中的所有文档 [英] How to get all documents in folders

问题描述

此代码将从文本框URL获取所有文件夹中的所有文档。

  private  < span class =code-keyword> void  getDocumentInFolders（ object  sender，RoutedEventArgs e）
 {
 
 
  string  [] subirectoryEntries = Directory.GetDirectories（catalog.Text）; 
  foreach （字符串子目录 in  subirectoryEntries）
 {
  var  getAllFolders = subirectory; 
 
 
 
  string  [] fileEntries = Directory.GetFiles（getAllFolders）; 
  foreach （字符串 fileName  in  fileEntries）
 {
  var  getFilesInFolders = fileName; 
} 
 
} 
 
} 

但是，如果我从许多文件夹中读取并需要在许多不同的文件夹中获取4000文档，我该怎么办呢？它会更快而且不会减少这么多内存？



问候！



UPDATE

===========

我也是如何编写我的代码所以例如我只选择1个文件夹作为url根文件夹

并且在该文件夹中我有2个文件夹并且对文件夹有3个文件夹里面和里面在这三个文件夹中，我有一个文件在他们每个人我应该如何编写我的代码？

解决方案

从根文件夹获取所有文件和所有文件它的子文件夹（及其子文件夹）使用类似

 var allFiles = Directory.GetFiles（folderName，*。*， SearchOption.AllDirectories ）; 

如果你想看看很多不同的东西t文件夹，不想使用这么多内存然后只处理一个文件夹，并在你完成一个文件夹时丢弃字符串数组（即把那个处理放在你从一些外部循环调用的方法中文件夹名称）

为什么不这样做：

  string  [] filenames = Directory.GetFiles（path，  * ，SearchOption.AllDirectories）; 

This code will get all all documents in all folder from a textbox url.

private void getDocumentInFolders(object sender, RoutedEventArgs e)
      {


          string[] subdirectoryEntries = Directory.GetDirectories(catalog.Text);
          foreach (string subdirectory in subdirectoryEntries)
          {
              var getAllFolders = subdirectory;



              string[] fileEntries = Directory.GetFiles(getAllFolders);
              foreach (string fileName in fileEntries)
              {
                  var getFilesInFolders = fileName;
              }

          }

      }

But what if i read from many folders and need to get for example 4000 document in many different folders, what should i do so it goes faster and dont reduse so much memory?

Regards!

UPDATE
===========
I also how could i write my code so for example i just select 1 folder as url the root folder
and in that folder i have 2 folders and does to folders har 3 folders inside, and inside of this 3 folders i have a document in everyone of them how should i write my code then?

解决方案

To get all of the files from a root folder and all of its sub-folders (and their sub-folders) use something like

var allFiles = Directory.GetFiles(folderName, "*.*", SearchOption.AllDirectories);

If you're going to look at many different folders and don't want to use so much memory then just deal with a folder at a time and discard the string array when you're finished with a folder (i.e put that processing away in a method that you call from some outer loop of folder names)

Why don't you just do this:

string [] filenames = Directory.GetFiles( path, "*", SearchOption.AllDirectories ); 

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