DOCUMENT:Q184609  27-APR-1998  [vbwin]
TITLE   :PRB: ADO: Compile error: User-defined Type Not Defined
PRODUCT :Microsoft Visual Basic for Windows
PROD/VER:WINDOWS:5.0
OPER/SYS:WINDOWS
KEYWORDS:kbnokeyword

======================================================================
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The information in this article applies to:

 - Microsoft Visual Basic Enterprise Edition for Windows, version 5.0
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SYMPTOMS
========

When you compile your ADO project, you receive the error:

   Compile error:
   User-defined type not defined

This can occur on either a Connection or Command object.

CAUSE
=====

You may have referenced one of the following libraries instead of the
instead of the Microsoft ActiveX Data Objects (ADODB) type library:

 - Microsoft ActiveX Data Objects Recordset (ADOR) type library.

 - Microsoft ActiveX Data Objects (Multi-dimensional) (ADOMD) type library.

RESOLUTION
==========

Remove the incorrect type library reference from your project, and add a
reference to the correct type library.

STATUS
======

This behavior is by design.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Create a new project and add a command button (Command1) to a form.

2. Add a reference to the Microsoft ActiveX Data Objects Recordset Library.

3. Add the following code to the form:

      Private Sub Command1_Click()
      Dim cn As Connection
      End Sub

4. Run the project and click the command button. The error appears.

5. Remove the reference, and add a reference to the Microsoft ActiveX Data
   Objects Library.

6. Click the command button. The error does not appear.

NOTES:

 - Access users will have to use ADOR.Connection to avoid confusion with
   the DAO Connection object.

 - If the Intellitype feature is turned on, you should notice that it
   doesn't show Connection as a valid object with the ADOR type library,
   but does with the ADODB type library. This is a good indication that you
   do not have the correct type library referenced.

 - This error can also occur when referencing objects in other type
libraries that aren't referenced.

(c) Microsoft Corporation 1998, All Rights Reserved. Contributions by
Malcolm Stewart, Microsoft Corporation

Additional query words:
======================================================================
Keywords          : kbnokeyword
Version           : WINDOWS:5.0
Platform          : WINDOWS
Issue type        : kbprb

=============================================================================

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