VB.NET獲取目錄文件夾名稱

先用System.IO.Directory.GetDirectories函數(shù)獲取子目錄的名稱（包括其路徑），再用System.IO.Path.GetFileName獲取子目錄的名稱。下面是代碼：

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Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click

For Each s In System.IO.Directory.GetDirectories("C:\Windows")

Console.WriteLine(System.IO.Path.GetFileName(s))

Next

End Sub

下面是部分輸出：

Application Data

AppPatch

assembly

BOCNET

Boot

Branding

ConfigSetRoot

Cursors

Debug

DigitalLocker

Downloaded Installations

Downloaded Program Files

ehome

en-US

Fonts

Globalization

Help

...

可能有更簡潔的方法，你可以到MSDN看看

System.IO.Directory.GetDirectories：

System.IO.Path.GetFileName：

通用 I/O 任務(wù)：

vb.net從文件路徑中獲取文件名

獲取方法，參考實例如下：

'獲取路徑名各部分:

如：

c:\dir1001\aaa.txt

'獲取路徑路徑

c:\dir1001\

Public

Function

GetFileName(FilePathFileName

As

String)

As

String

'獲取文件名

aaa.txt

On

Error

Resume

Next

Dim

i

As

Integer,

J

As

Integer

i

Len(FilePathFileName)

J

InStrRev(FilePathFileName,

"\")

GetFileName

Mid(FilePathFileName,

J

+

1,

i)

End

Function

''獲取路徑路徑

c:\dir1001\

Public

Function

GetFilePath(FilePathFileName

As

String)

As

String

'獲取路徑路徑

c:\dir1001\

On

Error

Resume

Next

Dim

J

As

Integer

J

InStrRev(FilePathFileName,

"\")

GetFilePath

Mid(FilePathFileName,

1,

J)

End

Function

'獲取文件名但不包括擴展名

aaa

Public

Function

GetFileNameNoExt(FilePathFileName

As

String)

As

String

'獲取文件名但不包括擴展名

aaa

On

Error

Resume

Next

Dim

i

As

Integer,

J

As

Integer,

k

As

Integer

i

Len(FilePathFileName)

J

InStrRev(FilePathFileName,

"\")

k

InStrRev(FilePathFileName,

".")

If

k

Then

GetFileNameNoExt

Mid(FilePathFileName,

J

+

1,

i

-

J)

Else

GetFileNameNoExt

Mid(FilePathFileName,

J

+

1,

k

-

J

-

1)

End

If

End

Function

'＝＝＝＝＝

'獲取擴展名

.txt

Public

Function

GetFileExtName(FilePathFileName

As

String)

As

String

'獲取擴展名

.txt

On

Error

Resume

Next

Dim

i

As

Integer,

J

As

Integer

i

Len(FilePathFileName)

J

InStrRev(FilePathFileName,

".")

If

J

Then

GetFileExtName

".txt"

Else

GetFileExtName

Mid(FilePathFileName,

J,

i)

End

If

End

Function

vb.net 二進制讀取文件

VB.NET打開二進制文件用fileopen完成，打開二進制文件的形式為：openmode.binary

讀取二進制文件用的是fileget方法，寫入二進制文件用的是fileput方法。

應(yīng)用示例：將一批隨機數(shù)保存在一個dat文件中，然后再將其提取到文本框中。

二進制文件的讀寫一批隨機數(shù)的存取，程序為：

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim x, i, fn As Integer

Dim s As String = ""

fn = FreeFile()

FileOpen(fn, "d:\data.dat", OpenMode.Binary)

For i = 1 To 8

x = Int(Rnd() * 100)

s = s + Str(x)

FilePut(fn, x)

Next

FileClose(fn)

TextBox1.Text = s

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

Dim x, fn As Integer

Dim s As String = ""

fn = FreeFile()

FileOpen(fn, "d:\data.dat", OpenMode.Binary)

Do While Not EOF(fn)

FileGet(fn, x)

s = s + Str(x) + " "

Loop

FileClose(fn)

TextBox1.Text = s

End Sub