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Optimizing ContentFilters performance

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Joseph Alfano
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Joseph Alfano asked on 04 May 2010, 07:48 PM
We have a web forms page with multiple rad editors on it.  All editors have the ContentFilter property set to "DefaultFilters".  Upon clicking a postback button, there is a lag in the submission due to the contentfilters of the radEditors being applied.  

I am trying to optimize performance by only turning on those filters that are necessary to insure XHTML compliance of the output.  There is a filter titled "ConvertToXhtml".  Additionally, there are filters titled "ConvertFontToSpan" and "FixUlBoldItalic".  If I have "ConvertToXhtml" turned on, are these other two filters redundant, since when you convert the content to XHTML, won't it convert <font> and <u> tags to <span> tags?  If so, should I just apply the "ConvertToXhtml" filter and turn these other two filter off?

Also, I have followed your guideline on optimizing RadEditor performance (for example, http://www.telerik.com/community/forums/aspnet-ajax/editor/radeditor-performance-issue.aspx and http://www.telerik.com/support/kb/aspnet-ajax/editor/radeditor-loads-slowly-high-cpu-utilization.aspx).  Do you have any other recommendations for speeding up the processing of the RadEditor content by the ContentFilters?

Thanks so much for your assistance.

Joe

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Rumen
Telerik team
answered on 05 May 2010, 02:20 PM
Hi Joseph,

The ConvertToXhtml filter does not include the code of the ConvertFontToSpan and FixUlBoldItalic so they should be turned on too. You can disable these filters: FixEnclosingP, PdfExportFilter and IndentHTMLContent.

In the Q2 2010 release, we will provide the ability to disable the Undo/Redo feature which will significantly increase the loading, typing and submit speed when editing large content.

Best regards,
Rumen
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