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Distinguished Contributor
SRSDS
Posts: 240
Registered: ‎04-15-2011
Message 1 of 5 (241 Views)
Accepted Solution

Check if file open

241 Views, 4 Replies
03-15-2012 01:36 PM

I need to export data to an excel file but I need to check if the file is already open.

 

Searching the internet I found this but I don't know what "imports" to use to use to enable it. 

    Public Function FileInUse(ByVal sFile As String) As Boolean
        If System.IO.File.Exists(sFile) Then
            Try
                Dim F As Short = FreeFile()
                FileOpen(F, sFile, OpenMode.Binary, OpenAccess.ReadWrite, OpenShare.LockReadWrite)
                FileClose(F)
            Catch
                Return True
            End Try
        End If
    End Function

 

 

Distinguished Contributor
Posts: 406
Registered: ‎12-09-2003
Message 2 of 5 (239 Views)

Re: Check if file open

03-15-2012 01:42 PM in reply to: SRSDS

Looks like you need to import Microsoft.VisualBasic to get the FileOpen and FileClose functions. You may want to change them to use IO.File.Open and IO.File.Close though, to get away from the old VB syntax.

 

Brent McAnney

*Expert Elite*
Hallex
Posts: 1,553
Registered: ‎10-08-2008
Message 3 of 5 (224 Views)

Re: Check if file open

03-15-2012 02:08 PM in reply to: SRSDS

I don't know what is the namespaces you use

in your program to work with Excel

Anyway you may want to try this function as well

   'Imports Microsoft.Office.Interop.Excel
    'Imports Excel = Microsoft.Office.Interop.Excel
    Public Function IsExcelFileOpen(xlapp As Microsoft.Office.Interop.Excel.Application, filename As String) As Boolean
        Dim isopen As Boolean = True
        Dim wbook As Microsoft.Office.Interop.Excel.Workbook
        Try
            wbook = xlapp.Workbooks(filename)
        Catch
            isopen = False
        End Try
        Return isopen
    End Function

 

~'J'~

_____________________________________
C6309D9E0751D165D0934D0621DFF27919
Distinguished Contributor
SRSDS
Posts: 240
Registered: ‎04-15-2011
Message 4 of 5 (223 Views)

Re: Check if file open

03-15-2012 02:11 PM in reply to: BMcAnney

Hi,

I added Imports Microsoft.VisualBasic but it didn't support the problem

 

OpenMode.Binary is the only one it has a problem with it seems.

*Expert Elite*
arcticad
Posts: 1,285
Registered: ‎06-21-2004
Message 5 of 5 (221 Views)

Re: Check if file open

03-15-2012 02:22 PM in reply to: SRSDS

Microsoft.VisualBasic.OpenMode.Binary

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