Microsoft KB Archive/890344

= FIX: A Windows Forms-based application that uses the System.Windows.Forms.Timer control may stop responding when the Enabled property of the Timer control is set to false in the .NET Framework 1.1 =

Article ID: 890344

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft .NET Framework 1.1
 * Microsoft .NET Framework 1.1 Service Pack 1

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SYMPTOMS
In the Microsoft .NET Framework 1.1, when a Windows Forms-based application uses the System.Windows.Forms.Timer control and the Enabled property of the Timer control is set to false, the application may stop responding. You may experience this problem when the following conditions are true:
 * A second System.Windows.Forms.Timer control is enabled and is active in the application.
 * The callback for the second Timer control takes more time to run than the timer interval. For example, the Tick event of the second Timer control is fired before processing of the current Tick event has completed.



RESOLUTION
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 .NET Framework 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
Microsoft .NET Framework 1.1 SP1

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 software updates.

The English version of this hotfix 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 tool in Control Panel.   Date         Time   Version        Size       File name --  09-Dec-2004  19:45  1.1.4322.2056  2,056,192  System.windows.forms.dll



WORKAROUND
To work around this problem, you can use the System.Timer control, instead of using the System.Windows.Forms.Timer control.



STATUS
Microsoft has confirmed that this is a problem 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

Keywords: kbhotfixserver kbqfe kbfix kbbug kbpubtypekc KB890344

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