How to implement a CalDAV server in C#?

Question

ASP.NET

Good afternoon, colleagues!
It is necessary to implement a CalDAV server to synchronize events within corporate software with smartphones and email programs of employees.
Perhaps there are .NET libraries that implement the CalDAV protocol? What do you advise? A cursory Google search turned up no results.

Answer 1

Specify, please, the task more globally.
There is also Exchange, Zimbra - ready-made collaboration servers - calendars, mail, contact lists ..