Creating a central calender for local syncing (iCal/CalDAV/???)

Question

Currently a website I'm working on has a web-based calender of upcoming events. We are looking into the possiblilty of expanding this so that people can locally access the calender data - if possible through exchange, google calender or any other major calender program.

My question is on how to implement this. The diary is likely to change and this needs to be synced into the local calenders without user input.

Is this possible with an iCal file?

CalDAV seems a good alternative, but there is little documentation on creating/mantaining a CalCAV file. Does anyone know of any good resources on this? And is it possible to get CalDAV and exchange working together?

Are there any other alternate options that people have had succes with?

Thanks for your help

Answer 1

I'd back the calendar with a database, and offer the data through both HTML and an iCal interface.

Answer 2

I've found it's possible with an .ics (iCal) file. It's just how the user adds it into their calender that matters. If they download a copy then add that to their local calender then it won't auto update. However, if they say it's a web calender and point their computer towards the url of the iCal file then any alteration will be mirror onto their local calender.