GetObject or CreateObject... vb6

Posted on 2004-09-15
Last Modified: 2008-01-09
From vb form, I am selecting a workbook which it may or may not already open.  

Public Sub OpenExcelFile(strPath As String)

Dim xlWb As Excel.Workbook

If <file is already open?> Then                    ' What logic can I use here, or I have use error number to handle it?
   Dim xlObj As Excel.Application
   Set xlObj = GetObject(,"Excel.Application")
   Dim xlObj As New Excel.Application
   Set xlObj = CreateObject(,"Excel.Application")
End if

Set xlWb = xlObj.OpenWorkBook(strPath)

Set xlObj = Nothing
Set xlWb = Nothing

Please QC above code also.

Question by:Mike Eghtebas
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
LVL 52

Accepted Solution

Ryan Chong earned 500 total points
ID: 12072096
Try something like:

Dim xlObj As Excel.Application
Dim xWb As Excel.WorkBook
Dim xtmpWb As Excel.WorkBook
Dim isFound as boolean

on error resume next
   Set xlObj = GetObject(,"Excel.Application")

if xlObj is nothing then Set xlObj = CreateObject(,"Excel.Application")

isFound  = false
For each xtmpWb in xlObj.workbooks
   if xtmpWb.FullName = strPath then
          Set xWb = xtmpWb
          isFound = true
          exit for
   end if

if isfound = false then Set xlWb = xlObj.OpenWorkBook(strPath)

on error goto 0

LVL 34

Author Comment

by:Mike Eghtebas
ID: 12072111
If there is no excel open, it won't go beyond:

Set xlObj = GetObject(,"Excel.Application")

I think. brb
LVL 34

Author Comment

by:Mike Eghtebas
ID: 12072391
Now, I can see your logic regarding Set xlObj = GetObject(,"Excel.Application").

Btw, what happens if we had two workbooks with the same name but in different folder?  How following code would know what 'FullName' to consider:

if xtmpWb.FullName = strPath then

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

LVL 52

Expert Comment

by:Ryan Chong
ID: 12072519
i think the xtmpWb.FullName returns the full path of the workbook, isn't it?
LVL 34

Author Comment

by:Mike Eghtebas
ID: 12072577
I used:

if frmMain.cboFolder & "\" & xtmpWb.Name = strPath then

Because there maybe to identical xl file present in two different folders; therefore, xtmpWb.FullName cann't tell what xtmpWb we intend to open.

You were great as always.


LVL 50

Expert Comment

by:Dave Brett
ID: 12072600
If GetObject returns an Excel instance then rather than loop through all open workbooks you could attempt to set xWb to yourbook name - if an error occurs then the file is closed

Dim xlObj      As Excel.Application
Dim xWb        As Excel.Workbook
Dim xtmpWb     As Excel.Workbook
Dim isFound    As Boolean

    On Error Resume Next
    Set xlObj = GetObject(, "Excel.Application")

    If xlObj Is Nothing Then
        Set xlObj = CreateObject("Excel.Application")
        On Error Resume Next
        Set xtmpWb = xlObj.Workbooks("aa.xls")
        If Err.Number <> 0 Then Set xlWb = xlObj.Workbooks.Open("C:\test\aa.xls")
        On Error GoTo 0
    End If


LVL 34

Author Comment

by:Mike Eghtebas
ID: 12085718

Thank you for the code you provided.  As you know, your post was after the question has been closed -- to late to split.  

Although I am using the solution from ryancys, but I appreciate having your code.



Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Have you ever wanted to restrict the users input in a textbox to numbers, and while doing that make sure that they can't 'cheat' by pasting in non-numeric text? Of course you can do that with code you write yourself but it's tedious and error-prone …
If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Get people started with the process of using Access VBA to control Excel using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Excel. Using automation, an Access application can laun…

751 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question