如何使用通配符扫描具有特定子目录的目录 [英] How to scan a directory with wildcard with a specific subdirectory

问题描述

我想知道什么是扫描具有不确定字符的目录的好方法。

例如，我想扫描

C：\Program\Version2。* \Files

含义

• 该文件夹位于 C：\Program


• Version2。* 可以是任何类似 Version2.33 ， Version2.1 等。


• 该文件夹中有一个名为 Files 的文件夹我知道如果包含（Version2），我可以像 foreach（directory）这样做一些东西。 ，但我想知道是否有更好的方式这样做。

  解决方案

  Directory.EnumerateDirectories 接受搜索模式。所以列举具有通配符的父项，而不是枚举其他的：

    var directories = 
   Directory.EnumerateDirectories（@C ：\Program\，Version2。*）
   .SelectMany（parent => Directory.EnumerateDirectories（parent，Files））
    

  注意：如果路径可以包含任何级别的通配符 - 简单地标准化路径并按\拆分，而不是逐级收集文件夹。

  
  

  I was wondering what would be a good way to scan a directory that has characters you are not sure of.

  For example, I want to scan

  C:\Program\Version2.*\Files

  Meaning

  • The folder is located in C:\Program
  • Version2.* could be anything like Version2.33, Version2.1, etc.
  • That folder has a folder named Files in it

  I know that I could do something like foreach (directory) if contains("Version2."), but I was wondering if there was a better way of doing so.

  解决方案

  Directory.EnumerateDirectories accepts search pattern. So enumerate parent that has wildcard and than enumerate the rest:

    var directories = 
      Directory.EnumerateDirectories(@"C:\Program\", "Version2.*")
       .SelectMany(parent => Directory.EnumerateDirectories(parent,"Files"))
  

  Note: if path can contain wildcards on any level - simply normalize path and split by "\", than collect folders level by level.

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