如何获取文件路径 [英] How to Get File Path

问题描述

我正在寻找一个快速的功能，它只会给我一个文件的路径。

例如，如果我有字符串C：\Temp \ MyFile.txt ;，我想只返回

字符串C：\Temp \。如何使用VB.NET完成？


谢谢

Dustin

解决方案

< blockquote>这样你的意思是：


Dim file As String =" C：\Temp \ MyFile.txt"

Dim path As String = file.Substring（0，file.LastIndexOf（" \"））


我没试过但是应该可以。

Dustin Wilson写道：

我正在寻找一个快速的功能，它只能给我一个文件的路径。
例如，如果我有字符串 C：\Temp \ MyFile.txt"，我只想返回
字符串C：\Temp \。如何使用VB.NET完成？

谢谢
Dustin

Dim x As String =" c：\ MyDy \ MyFile.txt"

Dim y As String = x.Substring（0，x.LastIndexOf（" \"）+ 1）


我可能会复制一些内部VB函数......但是如果我是，那我还没有发现它... b / b
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我认为你应该使用目录信息对象，这里有一个例子：

__________________


进口系统

进口System.IO


公共类MoveToTest


Public Shared Sub Main（）

''引用一个目录。

Dim di As New DirectoryInfo（" TempDir"）


''创建目录只有它还没有ist。

如果di.Exists = False那么

di.Create（）

结束如果


''在刚创建的目录中创建一个子目录。

Dim dis As DirectoryInfo = di.CreateSubdirectory（" SubDir"）

Console.WriteLine（& '{0}'的根路径是''{1}''"，dis.Name，

dis.Root）


' '删除父目录。

di.Delete（True）

End Sub''Main

End Class''MoveToTest

I''m looking for a quick function that will give me just the path for a file.
For example if I have the string "C:\Temp\MyFile.txt", I want to just return
just the string "C:\Temp\". How is this done using VB.NET?

Thanks
Dustin

解决方案

Somthing like this you mean:

Dim file As String = "C:\Temp\MyFile.txt"
Dim path As String = file.Substring(0, file.LastIndexOf("\"))

I didn''t try it but that should work.

Dustin Wilson wrote:

I''m looking for a quick function that will give me just the path for a file.
For example if I have the string "C:\Temp\MyFile.txt", I want to just return
just the string "C:\Temp\". How is this done using VB.NET?

Thanks
Dustin

Dim x As String = "c:\MyDir\MyFile.txt"
Dim y As String = x.Substring(0, x.LastIndexOf("\") + 1)

I might be duplicating some internal VB function...but if I am, I
haven''t discovered it yet...
*** Sent via Developersdex http://www.developersdex.com ***

I think you should use the directory info object, here an example:
__________________

Imports System
Imports System.IO

Public Class MoveToTest

Public Shared Sub Main()
'' Make a reference to a directory.
Dim di As New DirectoryInfo("TempDir")

'' Create the directory only if it does not already exist.
If di.Exists = False Then
di.Create()
End If

'' Create a subdirectory in the directory just created.
Dim dis As DirectoryInfo = di.CreateSubdirectory("SubDir")
Console.WriteLine("The root path of ''{0}'' is ''{1}''", dis.Name,
dis.Root)

'' Delete the parent directory.
di.Delete(True)
End Sub ''Main
End Class ''MoveToTest

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