Article ID: 321552 - View products that this article applies to.
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The Render method in the BasePartialCachingControl class renders by using a writer of type HtmlTextWriter. This frequently occurs when you use an OuputCache directive for user controls. When a down-level browser browses to the page, the browser continues to use HtmlTextWriter instead of Html32TextWriter to render the user control.
For example, the following user control
should be rendered as follows for down-level browsers:
However, because a HtmlTextWriter type is used to render cached controls, the browser renders the user control as follows:
Notice the style attribute.
To resolve this problem, obtain the latest service pack for Microsoft .NET Framework. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
318836The English version of this fix should have the following file attributes or later:
(https://support.microsoft.com/kb/318836/EN-US/ )INFO: How to Obtain the Latest .NET Framework Service Pack
Date Time Version Size File name -------------------------------------------------------------- 17-Apr-2002 20:45 1.0.3705.252 192,512 Aspnet_isapi.dll 17-Apr-2002 20:39 19,332 Aspnet_perf.ini 17-Apr-2002 20:45 1.0.3705.252 24,576 Aspnet_regiis.exe 17-Apr-2002 20:45 1.0.3705.252 28,672 Aspnet_wp.exe 20-Mar-2002 13:31 8,709 Smartnav.js 20-Mar-2002 13:31 7,003 Smartnavie5.js 19-Apr-2002 10:40 1.0.3705.252 1,183,744 System.web.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft .NET Framework Service Pack 2 (SP2).
After you apply the fix, cached controls (for example, user controls that include the OuputCache directive) are rendered by using the writer that is associated with the page instead of by using HtmlTextWriter.
If you use a down-level browser, the writer is of type Html32TextWriter. If you use an up-level browser, the writer is of type HtmlTextWriter.
Article ID: 321552 - Last Review: October 24, 2013 - Revision: 2.2