代码审查：在给定完整文件路径的情况下确定文件夹是否存在？

发布于 2024-08-12 10:07:14 字数 500 浏览 4 评论 0原文

通过向函数传递文件的完整路径（例如 C:\someFolder\anotherFolder\someXML.xml），确定该文件夹是否存在。有没有更聪明/更好/更优雅的方法来做到这一点？这是我的实现：

Private Function FolderExists(ByVal fullPath As String) As Boolean
    Dim folders() As String = fullPath.Split("\")
    Dim folderPath As String = ""
    For i As Integer = 0 To folders.Length - 2 'subtract 2 to avoid appending the filename.
        folderPath += folders(i) + "\"
    Next
    Dim f As New DirectoryInfo(folderPath)
    Return f.Exists
End Function

原文

With a function being passed a full path to a file, such as C:\someFolder\anotherFolder\someXML.xml, determine whether the folder exists. Is there a smarter/better/more elegant way of doing this? Here is my implementation:

Private Function FolderExists(ByVal fullPath As String) As Boolean
    Dim folders() As String = fullPath.Split("\")
    Dim folderPath As String = ""
    For i As Integer = 0 To folders.Length - 2 'subtract 2 to avoid appending the filename.
        folderPath += folders(i) + "\"
    Next
    Dim f As New DirectoryInfo(folderPath)
    Return f.Exists
End Function

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撩起发的微风 2024-08-19 10:07:14

只需使用 File.Exists 即可，接受完整路径。

编辑：抱歉，调用您的目录变量 f 让我感到困惑......我相信您可以翻译以下 C# 代码：-

 return Directory.Exists( Path.GetDirectoryName( fullPath ) );

.NET BCL ARM 对这些东西有相当多的报道，尽管我确信那里有更好的参考。 System.IO.Path 和 Environment 文档可能就可以了。

just use File.Exists instead, it accepts a full path.

EDIT: Sorry, calling your directory variable f confused me.... I trust you can translate the following C# code:-

 return Directory.Exists( Path.GetDirectoryName( fullPath ) );

The .NET BCL ARM has decent coverage of this stuff, though I'm sure there's a better reference out there. The System.IO.Path and Environment docs would probably be just fine.

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枯寂 2024-08-19 10:07:14

您可以使用 [File.Exists](http://msdn.microsoft.com/en-us/library/system.io.file.exists(VS.71).aspx))

Private Function FolderExists(ByVal fullPath As String) As Boolean
  return (File.exists(fullPath)
          And (File.GetAttributes(fullPath) And FileAttributes.Directory))
End Function

You can use [File.Exists](http://msdn.microsoft.com/en-us/library/system.io.file.exists(VS.71).aspx))

Private Function FolderExists(ByVal fullPath As String) As Boolean
  return (File.exists(fullPath)
          And (File.GetAttributes(fullPath) And FileAttributes.Directory))
End Function

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