Numer ID artykułu: 825082 - Zobacz jakich produktów dotyczą zawarte w tym artykule porady.
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In the Microsoft .NET Framework, you can use enum types for flags by using the FlagsAttribute class. If you use the enum type in ASP.NET controls, and the Flags property is set to a simple tag (for example, Flags="Flag1"), the application works as expected. However, if the Flags property is set to a bit combination, as in the following example, the result is a NullReferenceException error:
If you do not have many flag combinations, you can use the following enum declaration to work around the problem:
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, 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=supportNote 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.
The English version of this hotfix has the file attributes (or later) 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 ------------------------------------------------------------------------ 01-Aug-2003 19:47 1.1.4322.930 253,952 Aspnet_isapi.dll 01-Aug-2003 19:47 1.1.4322.930 20,480 Aspnet_regiis.exe 01-Aug-2003 19:47 1.1.4322.930 32,768 Aspnet_wp.exe 16-May-2003 01:49 33,522 Installpersistsqlstate.sql 16-May-2003 01:49 34,150 Installsqlstate.sql 01-Aug-2003 19:38 1.1.4322.930 94,208 Perfcounter.dll 01-Aug-2003 19:55 1.1.4322.930 1,216,512 System.dll 01-Aug-2003 19:38 1.1.4322.930 323,584 System.runtime.remoting.dll 01-Aug-2003 19:56 1.1.4322.930 1,253,376 System.web.dll 01-Aug-2003 19:49 1.1.4322.930 819,200 System.web.mobile.dll 01-Aug-2003 19:49 1.1.4322.930 569,344 System.web.services.dll 01-Aug-2003 19:56 1.1.4322.930 1,335,296 System.xml.dll 01-Aug-2003 19:42 14,472 Webuivalidation.js
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.