I sometimes have the need for a completely custom page, to be used in an iframe, or as download.

For example: I needed a form to submit to a payment provider. That doesn't work as a module, only because every page is included in a form, submitting back to the host and you can't have a form inside a form. Currently I want to provide an iCalender download, which basically is a text file with just a few lines text, which will you download to Outlook. (which apearenlty can re-download it periodically)

I have no problem building a module which outputs the correct output, but when placed on a page, the DNN scaffolding is added, even when I create a template containning nothing more than "<div class=contentpane></div>" (which is even too much for the iCalendar download).

Is it possible to return just the output of the module(s) an a page, nothing else, while still being able to use DNN's authentication and stuff? (know which user is visiting, which portalID is accessed, disallow access based on the roles, database access, etc.)|
It would be most excellent if I could administer the page just like any other page and just place that one module on it.

I could build a proxy at "dnndev.me/proxy/home.aspx?tabid=42" which forwards the request to the original page "dnndev.me/home.aspx?tabid=42" and returns only the contents of the content pane.
Or I could build some script outside DNN to which I pass all data I would like returned, e.g. "dnndev.me/returnthis.cgi?content=<form%20method=post%20url=paymentprovider.example><input%20>type=hidden%20amount=684></form>" which returns only/exactly the content passed to it in the url.
Or use the srcdoc parameter of an iframe to create an iframe with content "<iframe srcdoc='hello world!'>", but that's html5 and not widely supported yet.

I remember I've read somewhere (was it an dream?) it's possible to request a module directly instead of requesting the page the module is on. I can't find what I think I've read again and I doubt it can be used for what I'm looking for.

Where do I get started with this?

Looks like it, but only visually. I could achieve this using a completely blank (white) template.

But If you look at the page source, it still includes doctype, html-tag, header, scripts, form, viewstate, etc.

It might indeed be the 'thing I saw in my dream', but it does not solve my issue.

I would like to return "Hello world", nothing else.

I understand that the page would look completely different.

I'm not intending to use this as a regular page, but as a little piece of content I provide as download or inside an iframe.

Is there a way to create a aspx page in which I can benefit from the DNN framework (check if the user is logged in, access portal settings and such) without outputting anything else than what I specify?
I'm not that familiar with .Net.