FIX: VB4 Apps with Unbound DBGrid Fail with VB5 DBGrid (171546)
The information in this article applies to:
- Microsoft Visual Basic Control Creation Edition for Windows 5.0
- Microsoft Visual Basic Learning Edition for Windows 5.0
- Microsoft Visual Basic Professional Edition for Windows 5.0
- Microsoft Visual Basic Enterprise Edition for Windows 5.0
- Microsoft Visual Basic Standard Edition, 32-bit, for Windows 4.0
- Microsoft Visual Basic Professional Edition, 32-bit, for Windows 4.0
- Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows 4.0
This article was previously published under Q171546 SYMPTOMS
When using Visual Basic 4.0 with an Unbound DBGrid and the Visual Basic 5.0
DBGrid32.ocx, data does not get cached correctly. This results in invalid
rows being displayed in the grid.
For example, an application using the Visual Basic 4.0 version would
correctly display three rows of data. The same application would display
only one row of data once the Visual Basic 5.0 version of the DBGrid
control is installed.
CAUSE
This problem is caused by a bug in the Visual Basic 5.0 Data Bound Grid
Controls (DBGrid32.ocx) in the version that ships with the product
(5.00.3714) and in the version that ships with Visual Studio 97 Service
Pack 1 (5.00.3817). Visual Studio 97 Service Pack 2 did not include an
updated version of the control.
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 3.
For more information, 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 3, please see the following article in the Microsoft
Knowledge Base:
175450
: INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 3
MORE INFORMATION
This problem does not occur if the application that uses the DBGrid control
has been built with Visual Basic 5.0.
This problem also does not occur if the application built by Visual Basic
4.0 is a 16-bit application. That application would use the 16-bit DBGrid
control and would be unaffected by this problem in the 32-bit version of
the control.
| Modification Type: | Minor | Last Reviewed: | 3/2/2005 |
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| Keywords: | kb32bitOnly kbbug kbfix kbvbp500sp3fix kbVS97sp2fix KB171546 |
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