1. Could you please elaborate bit more what is the excat scenario you are trying to implement using RadControls and what issues exactly you are facing.
2. As for dynamic loading of content on the page with ajax, pleas note that the need approach is the same as with regular postback. I mean that if for example you need to dynamically load UserControls you should ensure that they are correctly recreated on each postback , which is the same with regular postback. Please review the following online example which shows such functionality. test it on your end and verify of the issue you are facing could be replicated in it.
All the best,
the Telerik team
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