256 Posts
4 Kudos
Registered: ‎04-15-2011
Post 1 of 5
Accepted Solution

Check if file open

285 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
                Dim F As Short = FreeFile()
                FileOpen(F, sFile, OpenMode.Binary, OpenAccess.ReadWrite, OpenShare.LockReadWrite)
                Return True
            End Try
        End If
    End Function




Distinguished Contributor
406 Posts
2 Kudos
Registered: ‎12-09-2003
Post 2 of 5

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*
1,569 Posts
171 Kudos
Registered: ‎10-08-2008
Post 3 of 5

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
            wbook = xlapp.Workbooks(filename)
            isopen = False
        End Try
        Return isopen
    End Function



256 Posts
4 Kudos
Registered: ‎04-15-2011
Post 4 of 5

Re: Check if file open

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


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*
1,286 Posts
37 Kudos
Registered: ‎06-21-2004
Post 5 of 5

Re: Check if file open

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



(defun botsbuildbots() (botsbuildbots))
Post to the Community

Have questions about Autodesk products? Ask the community.

New Post
Are you interested in helping shape the future of the Autodesk Community? To participate in this brief usability study, please click here. Your time and input is greatly appreciated!