Microsoft KB Archive/890834

= FIX: The wrong form may open in Visual Studio 2005 when you use the MdiParent.ActiveMdiChild.Name property in the .NET Framework 1.1 =

Article ID: 890834

Article Last Modified on 8/29/2006

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APPLIES TO


 * Microsoft .NET Framework 1.1

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SYMPTOMS
In Microsoft Visual Studio 2005, when you try to open a form in a Multiple Document Interface (MDI) application, the wrong form may open.

You encounter this problem when you use the MdiParent.ActiveMdiChild.Name property and the Microsoft .NET Framework 1.1. This problem occurs even though the Application.DoEvents method correctly enables the form.



CAUSE
This problem occurs because the MdiParent.ActiveMdiChild.Name property uses a cached value that is incorrect. The MdiParent.ActiveMdiChild.Name property updates the cache when the property enables a new MDI child form. However, the MdiParent.ActiveMdiChild.Name property resets the cache before the property can enable the next child form by sending a message to the MDI client window.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft .NET Framework 1.1 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must have the .NET Framework 1.1 Service Pack 1 (SP1) installed to apply this hotfix.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hot fix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

For more information about how to use the Form.MdiParent property, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn2.microsoft.com/en-us/library/system.windows.forms.form.mdiparent.aspx

For more information about how to use the Application.DoEvents method, visit the following MSDN Web site:

http://msdn2.microsoft.com/en-us/library/system.windows.forms.application.doevents.aspx

Keywords: kbhotfixserver kbpubtypekc kbexpertiseinter kbbug kbqfe KB890834

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