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Article ID: 933383 - Last Review: October 8, 2011 - Revision: 2.0

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SYMPTOMS

In a Microsoft ASP.NET 2.0 application, you create a local resource file (.resx) that is associated with a Web page (.aspx) or with a user control (.ascx). If you modify the resource file when the ASP.NET 2.0 application is running, you may receive the following error message:
Exception Details: System.InvalidOperationException: The resource class for this page was not found. Please check if the resource file exists and try again.

CAUSE

This problem occurs because ASP.NET 2.0 does not monitor the changes to the resource file. If you modify the resource file when the ASP.NET 2.0 application is running, the resource file is not recompiled. Therefore, the .aspx file that is already compiled becomes out of synchronization with the resource file. Or, the .ascx file that is already compiled becomes out of synchronization with the resource file. Therefore, an exception occurs.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only 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 2.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support (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.

Additionally, this hotfix is included with hotfix 934839. For more information about hotfix 934839, click the following article number to view the article in the Microsoft Knowledge Base:
934839  (http://support.microsoft.com/kb/934839/ ) FIX: You may receive an exception when you browse a .NET Framework 2.0 ASP.NET Web application

Prerequisites

You must have the .NET Framework 2.0 installed to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix. However, Internet Information Services (IIS) is restarted automatically during the installation of this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

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 item in Control Panel.
The .NET Framework 2.0, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Aspnet_wp.exe2.0.50727.81932,60015-Mar-200704:22x86
Webengine.dll2.0.50727.819406,01615-Mar-200704:22x86
System.Web.dll2.0.50727.8195,156,86415-Mar-200704:23x86
The .NET Framework 2.0, x64-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Aspnet_wp.exe2.0.50727.81944,37614-Mar-200723:33x64
Webengine.dll2.0.50727.819710,14414-Mar-200720:23x64
System.Web.dll2.0.50727.8195,087,23214-Mar-200723:33x64
The .NET Framework 2.0, Itanium-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Aspnet_wp.exe2.0.50727.81983,28815-Mar-200700:22IA-64
Webengine.dll2.0.50727.8191,181,69614-Mar-200720:25IA-64
System.Web.dll2.0.50727.8194,710,40015-Mar-200700:22IA-64

WORKAROUND

To work around this problem, use one of the following methods.

Method 1

Modify the .aspx file that uses the resource file, or modify the .ascx file that uses the resource file. Then, the .aspx file is recompiled, or the .ascx file is recompiled.

Method 2

Modify the Web.config file of the ASP.NET 2.0 application. Then, the whole ASP.NET 2.0 application is recompiled.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://support.microsoft.com/kb/824684/ ) Description of the standard terminology that is used to describe Microsoft software updates

APPLIES TO
  • Microsoft ASP.NET 2.0
  • Microsoft .NET Framework 2.0
Keywords: 
kbfix kbqfe KB933383
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