How to create an iCal.net channel

I created a method that outputs the iCal file when the user clicks a button. However, I would like users to subscribe to my channel.

Currently, events are stored in the database and the method receives them in the correct format before sending the file to the user.

From my point of view, in order for the channel to work, I need the file to be physically located on the server, and not dynamically generated.

Is there anything I can do to make the url for the woudl channel actually my page that returns the requested iCal file?

In other words, since I'm using C #, all of my [name] .ASPX pages, I suppose the feed should have a different extension instead of ASPX.

Any help is greatly appreciated!