Failed to render control: Value cannot be null. Parameter name: String
<div style='color:red'>Failed to render control: Value cannot be null. Parameter name: String</div>

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Failed to render control: Value cannot be null. Parameter name: String
 

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Tuesday, 4 Nov 2008 06:01 by MB
Thanks a lot for this, it was a great help. It always amazes me when the issue I'm having turns up in one my blogs on the same day!

Tuesday, 4 Nov 2008 02:45 by Tyler Holmes
Nice moves Vince, I which I'd known about the sys.fn_varbintohexstr function sooner. Best, Tyler

Wednesday, 26 Nov 2008 12:36 by Paul Galvin
That's a great post and one of the few good examples of quering against the DB directly for this kind of trouble shooting. There are two other approaches that should have worked as well. CQWP can be configured to show data of a particular content type and that might have found it. Also, a keyword search like: Content-type:"theContentType" should have returned the data as well. --Paul Galvin

Tuesday, 30 Dec 2008 06:38 by stephane eyskens
Hi Vince, That's indeed a very annoying situation :). I developed a very small tool that's available on CodePlex and that lets you know where a content type is used accross a site collection http://www.codeplex.com/spcontenttypeexplore It's very similar to the standard content types page but allows you to quickly see where your content type is used so that you can delete it afterwards :). However, interesting post as usual :) and of course your solution covers the entire webapp not mine.



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