Microsoft KB Archive/171805

= FIX: Problems Binding Controls to Nonexistent Data Control =

Article ID: 171805

Article Last Modified on 3/2/2005

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APPLIES TO


 * Microsoft Visual Basic 5.0 Learning Edition
 * Microsoft Visual Basic 5.0 Professional Edition
 * Microsoft Visual Basic 5.0 Enterprise Edition

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This article was previously published under Q171805



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: 170365 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:

171554 INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 2



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.

Keywords: kbbug kbfix kbvbp500sp2fix kbvs97sp2fix KB171805

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