Yesterday I went hunting for information on how to get the
web WYSIWYG editor TinyMCE to work inside of an ASP.NET UpdatePanel.
There are a few solutions for this on the web, nothing near as complete as Jesper Lind's post (Swedish), but even that failed to work. I replied to the post asking if he had some simple example that he could show and as a result we now have this complete example.
Here is a VB.NET version of Jesper's example I made when adapting the code to work in my VB.NET project at work.
Having had some experience with using this I'd highly recommend that you use webservices as the editors inside of any non-trivial updatepanel setup can become quite slow to reload.
To use TinyMCE on an Ajax form, load TinyMCE at page load as usual, but run "tinyMce.updateContent(text-area-id)" after you load text into the textareas so that it is displayed. If you have any problems with IE6 not updating the content, check this thread out. Also run tinyMCE.triggerSave(true, true) before saving so that TinyMCE copies text back from the editors.