Microsoft KB Archive/257641

= FIX: DataSource Drop-Down List Box Loads Slowly in Large Projects =

Article ID: 257641

Article Last Modified on 8/7/2007

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APPLIES TO


 * Microsoft Visual Basic 6.0 Professional Edition
 * Microsoft Visual Basic 6.0 Enterprise Edition

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This article was previously published under Q257641



SYMPTOMS
In a large project with many forms, when you click on the DataSource property of a databound control in the Properties window, it takes a very long time before the list appears.



CAUSE
When a user clicks the DataSource drop-down list box of a databound control in the Properties window, Visual Basic loads all of the forms in the project to look for designers that are DataSources. Because Visual Basic does not know in advance which forms it needs to load in order to retrieve this information, it must load all of them. This procedure may take a long time if it occurs in a large project that has many forms. The size at which the project exhibits this behavior depends on available system resources.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article. This bug was corrected in the latest service pack for Visual Studio 6.0.

For additional information about Visual Studio service packs, click the following article numbers to view the articles in the Microsoft Knowledge Base:

194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why

194295 HOWTO: Tell That a Visual Studio Service Pack Is Installed

To download the latest Visual Studio service pack, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/vstudio/Aa718353.aspx



MORE INFORMATION
As of Visual Studio 6.0 Service Pack 4, Visual Basic no longer needs to load forms to look for designers that are DataSources.

Additional query words: sp4

Keywords: kbbug kbfix kbvs600sp4fix kbvs600sp5fix KB257641

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