vb.net取文件名称,vb生成文件夹

如何使用vb.net获取一个文件夹里最后一个数据文件的名称？

function Newfile as fileinfo

Dim dic As New System.IO.DirectoryInfo("C:\Users\Q\Desktop\数据")

Dim files = dic.GetFiles.OrderByDescending(Function(s) s.CreationTime)

if files.

return files.first

end function

注意引入 system.linq

相关问答

Q1: VB.NET获取目录文件夹名称

先用System.IO.Directory.GetDirectories函数获取子目录的名称（包括其路径），再用System.IO.Path.GetFileName获取子目录的名称。下面是代码：

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

下面是部分输出：

Application Data

AppPatch

assembly

BOCNET

Boot

Branding

ConfigSetRoot

Cursors

Debug

DigitalLocker

Downloaded Installations

Downloaded Program Files

ehome

en-US

Fonts

Globalization

Help

...

可能有更简洁的方法，你可以到MSDN看看

System.IO.Directory.GetDirectories：

System.IO.Path.GetFileName：

通用 I/O 任务：

Q2: vb.net如何获得自己的文件名

Dim dDirectory As System.IO.Directory

Dim sName() As String

sName = dDirectory.GetFiles(path)

Q3: VB.net如何打开对话框获取文件名？注意不是完整路径还有没有后缀名！

Dim dialog As OpenFileDialog = New OpenFileDialog

If dialog.ShowDialog() = Windows.Forms.DialogResult.OK Then

Dim filename As String

filename = dialog.FileName

Dim results() As String

results = filename.Split("\")

filename = results(results.Length - 1)

filename = filename.Substring(0, filename.LastIndexOf("."))

MessageBox.Show(filename)

End If

dialog.Dispose()

Q4: vb.net从文件路径中获取文件名

获取方法，参考实例如下：

'获取路径名各部分: 如： c:\dir1001\aaa.txt

'获取路径路径 c:\dir1001\

Public Function GetFileName(FilePathFileName As String) As String '获取文件名 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

''获取路径路径 c:\dir1001\

Public Function GetFilePath(FilePathFileName As String) As String '获取路径路径 c:\dir1001\

On Error Resume Next

Dim J As Integer

J InStrRev(FilePathFileName, "\")

GetFilePath Mid(FilePathFileName, 1, J)

End Function

'获取文件名但不包括扩展名 aaa

Public Function GetFileNameNoExt(FilePathFileName As String) As String '获取文件名但不包括扩展名 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 0 Then

GetFileNameNoExt Mid(FilePathFileName, J + 1, i - J)

Else

GetFileNameNoExt Mid(FilePathFileName, J + 1, k - J - 1)

End If

End Function

'＝＝＝＝＝ '获取扩展名 .txt

Public Function GetFileExtName(FilePathFileName As String) As String '获取扩展名 .txt

On Error Resume Next

Dim i As Integer, J As Integer

i Len(FilePathFileName)

J InStrRev(FilePathFileName, ".")

If J 0 Then

GetFileExtName ".txt"

Else

GetFileExtName Mid(FilePathFileName, J, i)

End If

End Function

Q5: vb.net中 如何取出一个文件网址的中文文件名

使用DOS命令就可以完成：DIR D：\文件\ * TXT / S / / B D：\ 1.txt文件。使所有的TXT集成到1.txt文件的文件名。