【转】获得文件扩展名的函数
时 间:2012-05-14 15:54:53
作 者:竹笛 ID:8 城市:上海 QQ:2851379730
摘 要:转载的一个获得文件扩展名的函数。
正 文:
' Code courtesy of UtterAccess Wiki
' http://www.utteraccess.com/wiki/index.php/Category:FunctionLibrary
' Date contributed
'
' You are free to use this code in any application,
' provided this notice is left unchanged.
'
' REV DATE DESCRIPTION
' 1.0 2010-08-10 initial release
' 2.0 2010-09-03 replace w/ faster version, commented previous
' 2.1 2010-09-12 updated header/format, no functional change
'
'
'==============================================================================
' NAME: GetFileExtension
' RETURNS: Extension, including ".", or ZLS if extension not found
' Version 2000+ (Access 97 will require custom InStrRev function equivelent)
'==============================================================================
Public Function GetFileExtension(sFile As String) As String
On Error GoTo Error_Proc
Dim Ret As String
'=========================
Dim iPos As Integer
'=========================
iPos = InStrRev(sFile, ".")
If iPos <> 0 Then
'Previous version, 10% slower Ret = Right(sFile, Len(sFile) - iPos + 1)
Ret = Mid$(sFile, iPos)
End If
'=========================
Exit_Proc:
GetFileExtension = Ret
Exit Function
Error_Proc:
Select Case Err.Number
Case Else
MsgBox "Error: " & Trim(Str(Err.Number)) & vbCrLf & _
"Desc: " & Err.Description & vbCrLf & vbCrLf & _
"Procedure: GetFileExtension" _
, vbCritical, "Error!"
End Select
Resume Exit_Proc
Resume
End Function
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