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Determine if an excel file is open

cdmac2 asked
Medium Priority
Last Modified: 2008-02-01

My Access 2000 VBA code opens up an Excel Spreadsheet, edits some data, then closes and saves the spreadsheet.  How can I determine if the Excel file is already in use (So I can abort) before I open it.

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To see if the file is open you could use the subroutine below:

Public Function IsFileOpen(filename As String)
    Dim filenum As Integer, errnum As Integer

    On Error Resume Next   ' Turn error checking off.
    filenum = FreeFile()      ' Get a free file number.
    ' Attempt to open the file and lock it.
    Open filename For Input Lock Read As #filenum
    Close filenum                ' Close the file.
    errnum = Err                ' Save the error number that occurred.
    On Error GoTo 0            ' Turn error checking back on.

    ' Check to see which error occurred.
    Select Case errnum

        ' No error occurred.
        ' File is NOT already open by another user.
        Case 0
         IsFileOpen = False

        ' Error number for "Permission Denied."
        ' File is already opened by another user.
        Case 70
            IsFileOpen = True

        ' Another error occurred.
        Case Else
            Error errnum
    End Select

End Function

You would then just call it like this:

If IsFileOpen("C:\Myfile.xls\") then
     'Abort Code
    'Run Other Code
End If

Hope this helps, and for more infor check out: http://support.microsoft.com/?kbid=213383


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