Hello Thomas,
RadEditor for ASP.NET AJAX is an XHTML WYSIWIG editor and not a webforms/ASP editor like Visual Studio. With this in mind, you cannot load a user control in it in order to edit it and republish it. From what I can understand you need a content management system, so you can consider the Telerik SItefinity product.
What you can load in the editor is HTML, so you can have the user control render to a dummy container if this fits your needs. Here is an example that you can use as base to render user controls to HTML in order to use that HTML:
With user control like this:
you will get the following HTML in the editor:
Note that, in order to use form elements like textboxes or buttons, you should take some additional steps to have a form on the page used to render the user controls. Also, this is just one example, there are other ways to do this, and what is important is that neither approach offers a two-way conversion OOB, which means that when you edit the HTML in RadEditor, there is no built- in facility to translate it back into ASP markup.
Regards,
Marin Bratanov
Telerik
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