KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q171805: FIX: Problems Binding Controls to Nonexistent Data Control

Article: Q171805
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:5.0,97
Operating System(s): 
Keyword(s): kbVBp500 kbVS97sp2fix kbvbp500sp2fix
Last Modified: 18-JUN-2001

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

- Microsoft Visual Basic Learning Edition for Windows, version 5.0 
- Microsoft Visual Basic Professional Edition for Windows, version 5.0 
- Microsoft Visual Basic Enterprise Edition for Windows, version 5.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

Setting the DataSource property of a control to the name of a data control that
does not exist may cause a GPF with the following information:

  'Visual Basic 5.0 caused an invalid page fault in module KERNEL32.DLL at
  0137:bff78053"

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This bug has been fixed in Visual Studio 97 Service
Pack 2.

For more information on the Visual Studio 97 Service Pack 2, please see the
following article in the Microsoft Knowledge Base: Q170365 INFO: Visual Studio
97 Service Packs - What, Where, and Why

For a list of the Visual Basic 5.0 bugs that were fixed in the Visual Studio 97
Service Pack 2, please see the following article in the Microsoft Knowledge
Base:

Q171554 INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 2

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

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

To reproduce the problem, place a data control (either standard or remote) on a
form. Set its Name property to "ExtremelyLongName" and set its Index property to
0. Place a textbox (or any other control that can be bound) on the form and set
its DataSource property to "Food." Run the project and the problem will occur.

Besides trying to bind a control to a non-existent data control, in order to
reproduce the problem the data control must be part of a control array and its
Name property must be longer than any name used in the DataSource property of
the bound controls.

Additional query words:

======================================================================
Keywords          : kbVBp500 kbVS97sp2fix kbvbp500sp2fix 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB500
Version           : WINDOWS:5.0,97
Issue type        : kbbug
Solution Type     : kbfix

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

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.