Avatar billede larsgrau Forsker
27. april 2010 - 08:52 Der er 4 kommentarer og
1 løsning

Problem hvis der ikke vælges en fil

Hej

Jeg har fundet dette modul til at vælge fil med.
----------------------------------------------------------------
Option Compare Database
Option Explicit

Type tagOPENFILENAME
                              lStructSize As Long
                              hwndOwner As Long
                              hInstance As Long
                              strFilter As String
                              strCustomFilter As String
                              nMaxCustFilter As Long
                              nFilterIndex As Long
                              strFile As String
                              nMaxFile As Long
                              strFileTitle As String
                              nMaxFileTitle As Long
                              strInitialDir As String
                              strTitle As String
                              Flags As Long
                              nFileOffset As Integer
                              nFileExtension As Integer
                              strDefExt As String
                              lCustData As Long
                              lpfnHook As Long
                              lpTemplateName As String
End Type

Declare Function aht_apiGetOpenFileName Lib "comdlg32.dll" _
    Alias "GetOpenFileNameA" (OFN As tagOPENFILENAME) As Boolean

Declare Function aht_apiGetSaveFileName Lib "comdlg32.dll" _
    Alias "GetSaveFileNameA" (OFN As tagOPENFILENAME) As Boolean

Declare Function CommDlgExtendedError Lib "comdlg32.dll" () As Long

Global Const ahtOFN_READONLY = &H1
Global Const ahtOFN_OVERWRITEPROMPT = &H2
Global Const ahtOFN_HIDEREADONLY = &H4
Global Const ahtOFN_NOCHANGEDIR = &H8
Global Const ahtOFN_SHOWHELP = &H10
' You won't use these.
'Global Const ahtOFN_ENABLEHOOK = &H20
'Global Const ahtOFN_ENABLETEMPLATE = &H40
'Global Const ahtOFN_ENABLETEMPLATEHANDLE = &H80
Global Const ahtOFN_NOVALIDATE = &H100
Global Const ahtOFN_ALLOWMULTISELECT = &H200
Global Const ahtOFN_EXTENSIONDIFFERENT = &H400
Global Const ahtOFN_PATHMUSTEXIST = &H800
Global Const ahtOFN_FILEMUSTEXIST = &H1000
Global Const ahtOFN_CREATEPROMPT = &H2000
Global Const ahtOFN_SHAREAWARE = &H4000
Global Const ahtOFN_NOREADONLYRETURN = &H8000
Global Const ahtOFN_NOTESTFILECREATE = &H10000
Global Const ahtOFN_NONETWORKBUTTON = &H20000
Global Const ahtOFN_NOLONGNAMES = &H40000
' New for Windows 95
Global Const ahtOFN_EXPLORER = &H80000
Global Const ahtOFN_NODEREFERENCELINKS = &H100000
Global Const ahtOFN_LONGNAMES = &H200000


Function TestIt()
    Dim strFilter As String
    Dim lngFlags As Long
    strFilter = ahtAddFilterItem(strFilter, "Access Files (*.mda, *.mdb)", _
                    "*.MDA;*.MDB")
    strFilter = ahtAddFilterItem(strFilter, "dBASE Files (*.dbf)", "*.DBF")
    strFilter = ahtAddFilterItem(strFilter, "Text Files (*.txt)", "*.TXT")
    strFilter = ahtAddFilterItem(strFilter, "All Files (*.*)", "*.*")
    MsgBox "You selected: " & ahtCommonFileOpenSave(InitialDir:="C:\", _
        Filter:=strFilter, FilterIndex:=3, Flags:=lngFlags, _
        DialogTitle:="Hello! Open Me!")
    ' Since you passed in a variable for lngFlags,
    ' the function places the output flags value in the variable.
    Debug.Print Hex(lngFlags)
End Function


Function GetOpenFile(Optional varDirectory As Variant, _
    Optional varTitleForDialog As Variant) As Variant
' This function opens dialog for OPEN, with ALL files filter
Dim strFilter As String
Dim lngFlags As Long
Dim varFileName As Variant
' Specify that the chosen file must already exist,
' don't change directories when you're done
    lngFlags = ahtOFN_FILEMUSTEXIST Or _
                ahtOFN_HIDEREADONLY ' Or ahtOFN_NOCHANGEDIR
    If IsMissing(varDirectory) Then
        varDirectory = ""
    End If
    If IsMissing(varTitleForDialog) Then
        varTitleForDialog = ""
    End If

    strFilter = ahtAddFilterItem(strFilter, _
                "Log Files(*.log)", "*.log")
               
    varFileName = ahtCommonFileOpenSave( _
                    OpenFile:=True, _
                    InitialDir:=varDirectory, _
                    Filter:=strFilter, _
                    Flags:=lngFlags, _
                    DialogTitle:=varTitleForDialog)

    If Not IsNull(varFileName) Then
        varFileName = TrimNull(varFileName)
    End If
    GetOpenFile = varFileName
End Function


Function ahtCommonFileOpenSave( _
            Optional ByRef Flags As Variant, _
            Optional ByVal InitialDir As Variant, _
            Optional ByVal Filter As Variant, _
            Optional ByVal FilterIndex As Variant, _
            Optional ByVal DefaultExt As Variant, _
            Optional ByVal Filename As Variant, _
            Optional ByVal DialogTitle As Variant, _
            Optional ByVal hWnd As Variant, _
            Optional ByVal OpenFile As Variant) As Variant

' This is the entry point you'll use to call the common
' file open/save dialog. The parameters are listed
' below, and all are optional.
'
' In:
' Flags: one or more of the ahtOFN_* constants, OR'd together.
' InitialDir: the directory in which to first look
' Filter: a set of file filters, set up by calling
' AddFilterItem. See examples.
' FilterIndex: 1-based integer indicating which filter
' set to use, by default (1 if unspecified)
' DefaultExt: Extension to use if the user doesn't enter one.
' Only useful on file saves.
' FileName: Default value for the file name text box.
' DialogTitle: Title for the dialog.
' hWnd: parent window handle
' OpenFile: Boolean(True=Open File/False=Save As)
' Out:
' Return Value: Either Null or the selected filename
Dim OFN As tagOPENFILENAME
Dim strFileName As String
Dim strFileTitle As String
Dim fResult As Boolean
    ' Give the dialog a caption title.
    If IsMissing(InitialDir) Then InitialDir = CurDir
    If IsMissing(Filter) Then Filter = ""
    If IsMissing(FilterIndex) Then FilterIndex = 1
    If IsMissing(Flags) Then Flags = 0&
    If IsMissing(DefaultExt) Then DefaultExt = ""
    If IsMissing(Filename) Then Filename = ""
    If IsMissing(DialogTitle) Then DialogTitle = ""
    If IsMissing(hWnd) Then hWnd = Application.hWndAccessApp
    If IsMissing(OpenFile) Then OpenFile = True
    ' Allocate string space for the returned strings.
    strFileName = Left(Filename & String(256, 0), 256)
    strFileTitle = String(256, 0)
    ' Set up the data structure before you call the function
    With OFN
        .lStructSize = Len(OFN)
        .hwndOwner = hWnd
        .strFilter = Filter
        .nFilterIndex = FilterIndex
        .strFile = strFileName
        .nMaxFile = Len(strFileName)
        .strFileTitle = strFileTitle
        .nMaxFileTitle = Len(strFileTitle)
        .strTitle = DialogTitle
        .Flags = Flags
        .strDefExt = DefaultExt
        .strInitialDir = InitialDir
        ' Didn't think most people would want to deal with
        ' these options.
        .hInstance = 0
        .strCustomFilter = ""
        .nMaxCustFilter = 0
        .lpfnHook = 0
        'New for NT 4.0
        .strCustomFilter = String(255, 0)
        .nMaxCustFilter = 255
    End With


    ' This will pass the desired data structure to the
    ' Windows API, which will in turn it uses to display
    ' the Open/Save As Dialog.
    If OpenFile Then
        fResult = aht_apiGetOpenFileName(OFN)
    Else
        fResult = aht_apiGetSaveFileName(OFN)
    End If

    ' The function call filled in the strFileTitle member
    ' of the structure. You'll have to write special code
    ' to retrieve that if you're interested.
    If fResult Then
        ' You might care to check the Flags member of the
        ' structure to get information about the chosen file.
        ' In this example, if you bothered to pass in a
        ' value for Flags, we'll fill it in with the outgoing
        ' Flags value.
        If Not IsMissing(Flags) Then Flags = OFN.Flags
        ahtCommonFileOpenSave = TrimNull(OFN.strFile)
    Else
        ahtCommonFileOpenSave = "NoFile"
    End If
End Function


Function ahtAddFilterItem(strFilter As String, _
    strDescription As String, Optional varItem As Variant) As String
' Tack a new chunk onto the file filter.
' That is, take the old value, stick onto it the description,
' (like "Databases"), a null character, the skeleton
' (like "*.mdb;*.mda") and a final null character.

    If IsMissing(varItem) Then varItem = "*.*"
    ahtAddFilterItem = strFilter & _
                strDescription & vbNullChar & _
                varItem & vbNullChar
End Function


Private Function TrimNull(ByVal strItem As String) As String
Dim intPos As Integer
    intPos = InStr(strItem, vbNullChar)
    If intPos > 0 Then
        TrimNull = Left(strItem, intPos - 1)
    Else
        TrimNull = strItem
    End If
End Function


Function fIsFileDIR(stPath As String, _
                    Optional lngType As Long) _
                    As Integer
'Fully qualify stPath
'To check for a file
'  ?fIsFileDIR("c:\winnt\win.ini")
'To check for a Dir
'  ?fIsFileDir("c:\msoffice",vbdirectory)
'
    On Error Resume Next
    fIsFileDIR = Len(Dir(stPath, lngType)) > 0
End Function

Function Findslash(txt As String) As Variant
Dim n As Integer
n = Len(txt)
While n > 0
    If Mid(txt, n, 1) = "." Then
        Findslash = n
        Exit Function
    End If
    n = n - 1
Wend
End Function
----------------------------------------------------------------

og så her jeg den knap som starter det modul hvor der stå denne kode:
----------------------------------------------------------------
Option Compare Database

Private Sub import_file_Click()

On Error GoTo Err_import_file

Dim stDocname As String

DoCmd.SetWarnings False

stDocname = GetOpenFile("", "Vælg en Log Fil")

Name stDocname As "c:\import.txt"

DoCmd.TransferText acImportDelim, "import data", "Ikkerettetdata", "c:\import.txt", False, ""

import_file_exit:

Kill "c:\import.txt"

Exit Sub

Err_import_file:

MsgBox Err.Description

Resume import_file_exit

End Sub

----------------------------------------------------------------

Mit problem er, hvis man ikke vælger en fil, men istedet for vælger anuller eller trykker ESC kommer access med en fejl og jeg kan kun lykke access ned ved at lukke det via jobliste.

nogen som kan hjælpe mig ?
Avatar billede Slettet bruger
27. april 2010 - 09:11 #1
Find dit err.number ved at indsætte MsgBox Err.number & " - " & Err.Description i din error handling... og så gør noget i den her retning!~)

Err_import_file:
if err.number = DetAktuelleErrNr then
exit sub
else
MsgBox Err.number & " - " & Err.Description

Resume import_file_exit
end if
End Sub

ps. det var godt nok en voldsom kode for at hente en fil!~)
Avatar billede larsgrau Forsker
27. april 2010 - 09:29 #2
Takker det virker.

Har du evt en anden måde at hente en fil på ??
Avatar billede Slettet bruger
27. april 2010 - 09:43 #3
ja, men jeg skal lige ordne noget først... jeg uploader en lille eksempel db på www.parodux.com under gratis!~)
Avatar billede larsgrau Forsker
27. april 2010 - 09:53 #4
Takker
Avatar billede Slettet bruger
27. april 2010 - 10:36 #5
Så skulle den være der!~)
Avatar billede Ny bruger Nybegynder

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