Pick the lowest version of ADO that you have on your system and save it using
that reference. Your code should still run and most people will have version
2.5 or better. Otherwise you are stuck with the re-write... The intellisence
is pretty easy to work around so the only real issue is the performance hit
which is probably not substantial enough to be a show stopper...
--
HTH...

Jim Thomlinson


"RB Smissaert" wrote:

I don't want to use late binding for 3 reasons:
No intelli-sense
Some performance penalty?
As this is a very large .xla a lot of code re-writing.

RBS

"Bob Phillips" wrote in message
...
Why not just using late binding?


Dim oConn As Object
Dim oRS As Object

Set oConn = CreateObject("ADODB.Connection")

Set oRS = CreateObject("ADODB.Recordset")


--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

"RB Smissaert" wrote in message
...
Trying to come up with a foolproof way to add the current ADO library to
the
project's references.

I used to do this by just saving the .xla with a reference to a low
version,
2.5 and that worked fine for
a long time, but then came across a user where this failed.

Then I had a method that got the ADO library file path from registry
reads
using code from KeepITCool:

Function GetLibrary(sProgID$) As String
Dim oReg As Object, sDat$
Const HKCR = &H80000000
Set oReg = GetObject( _
"winmgmts:{impersonationLevel=impersonate}!\\.\roo t\default:StdRegProv")
oReg.getstringvalue _
HKCR, sProgID & "\CLSID", vbNullString, sDat
oReg.getstringvalue _
HKCR, "CLSID\" & sDat & "\Inprocserver32", vbNullString, sDat
GetLibrary = sDat
End Function

Except I re-wrote this by using the Windows API.
This solved this one user's problem, but it failed with others, not
exactly
sure why.

Currently I use this method:
Save the .xla with the lowest ADO version I have on my development
machine,
2.1
In the Workbook_Open event remove this reference and add the current
library
like this,
slightly simplified:

Function AddReferenceFromFile(strFilePath As String, _
Optional strWorkbook As String) As Boolean

Dim VBProj As VBProject

On Error GoTo ERROROUT

If Len(strWorkbook) = 0 Then
strWorkbook = ThisWorkbook.Name
End If

Set VBProj = Workbooks(strWorkbook).VBProject

VBProj.References.AddFromFile strFilePath

Exit Function
ERROROUT:

End Function


Sub SetADOReference()

Dim i As Byte
Dim ADOConn As Object
Dim strADOVersion As String
Dim strADOFolder As String
Dim strADOFile As String
Dim strADOPathFromINI As String
Dim arrADOFiles

Const strINIPath As String = "C:\test.ini"

strADOPathFromINI = ReadINIValue(strINIPath, _
"Add-in behaviour", _
"Full path to ADO library")

If InStr(1, strADOPathFromINI, ":\", vbBinaryCompare) 0 Then
If AddReferenceFromFile(strADOPathFromINI) = True Then
Exit Sub
End If
End If

strADOFolder = Left$(Application.Path, 1) & _
":\Program Files\Common Files\System\ADO\"

Set ADOConn = CreateObject("ADODB.Connection")
strADOVersion = Left$(ADOConn.Version, 3)
Set ADOConn = Nothing

Select Case strADOVersion
Case "2.8"
strADOFile = "msado15.dll"
Case "2.7"
strADOFile = "msado27.tlb"
Case "2.6"
strADOFile = "msado26.tlb"
Case "2.5"
strADOFile = "msado25.tlb"
Case "2.1"
strADOFile = "msado21.tlb"
Case "2.0"
strADOFile = "msado20.tlb"
End Select

If AddReferenceFromFile(strADOFolder & strADOFile) = True Then
Exit Sub
End If

arrADOFiles = Array("msado15.dll", "msado27.tlb", "msado26.tlb", _
"msado25.tlb", "msado21.tlb", "msado20.tlb")

For i = 0 To 5
If AddReferenceFromFile(strADOFolder & arrADOFiles(i)) = True Then
Exit Sub
End If
Next

MsgBox "Failed to add the ADO reference" & vbCrLf & vbCrLf & _
"Please contact Bart Smissaert:
",
_
vbExclamation, "adding ADO reference"

End Sub


Sofar this seems to work fine. I know it is overkill, but as this is so
tricky I can't be
careful enough. The .ini file read should always make it possible for the
user to
set the right path, but this can be skipped for starters.
I am not 100% sure the Select Case sequence is right, but then there
always
is the brute force
method with the array.

Have read a lot of postings about this problem, but there doesn't seem to
be
any definite, single best
way how to tackle this.
Any pitfalls here or any suggestions for improvement?


RBS