CompactDatabase Jet 4.0

I keep getting unrecognized database format when I try to compact a Jet 4.0 database within  a VB programme.
How do I get it to work?
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Can you open a Jet 4.0 db first?
gregbinnsAuthor Commented:
Yes I can open recordsets etc. no trouble.
What DAO library are you using? Is it 3.6 or 3.5?
Hi gregbinns.
You can compact Jet 4.0 databases using CompactDatabase Method of JetEngine object from Jet and Replication Objects (JRO).
Here is code taken directly from MSJRO.CHM help file:

CompactDatabase Method Example
This example demonstrates how to compact and encrypt a database with the CompactDatabase method.

Public Sub CompactAndEncrypt()

    Dim je As New JRO.JetEngine

    ' Make sure that a file doesn't exist with the name of
    ' the compacted database.
    If Dir("C:\Program Files\Microsoft Office\" & _
        "Office\Samples\Northwind2.mdb") <> "" Then Kill _
        "C:\Program Files\Microsoft Office\Office\Samples\Northwind2.mdb"

    ' Compacts and encrypts version Northwind database.
    je.CompactDatabase _
    "Provider=Microsoft.Jet.OLEDB.4.0;" & _
        "Data Source=C:\Program Files\Microsoft Office\" & _
        "Office\Samples\Northwind.mdb", _
    "Provider=Microsoft.Jet.OLEDB.4.0;" & _
        "Data Source=C:\Program Files\Microsoft Office\" & _
        "Office\Samples\Northwind2.mdb;" & _
    "Jet OLEDB:Encrypt Database=True"

End Sub

Best regards,

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Visual Basic Classic

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