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When you create a new database in Access 2000, the default data access library used is
ADO. That is, ADO will be selected under Tools/References in VBE instead of DAO.
Converted databases still retain DAO as the default library and ADO will not be selected
under References. The "Type Mismatch" error occurs as the global class Recordset is evaluated
as ADODB.Recordset instead of the DAO.Recordset, while
the "User Defined Type Not Defined" error is generated at compile time because
there is no Database object in ADO.
To fix this problem, uncheck the ADO reference and check DAO 3.6 Library
as a new reference.
You may still receive this error message when referring to DAO Recordsets if you have
both ADO and DAO selected under References. This is because the ADO reference is
listed above DAO in the References dialog and hence, is taking precedence at runtime when
Access tries to resolve your data types. To move the DAO reference above the ADO one
in the dialog,
- Uncheck the ADO reference.
- Close the References dialog.
- Open the dialog again.
- Check the ADO reference.
- Close the dialog.
If you are working with a database in which both ADO and DAO references are selected,
the best way is to always fully qualify your data types. For example:
Dim rsCustomers as ADODB.Recordset
Dim rsInvoices as DAO.Recordset
For more details on which references to use in your application, view this article.
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