How to hide my app's calendar from built-in calendar app?
My app needs an internal calendar. I can create a new calendar like this:
var store = await AppointmentManager.RequestStoreAsync(AppointmentStoreAccessType.AppCalendarsReadWrite);
var cacheCalendar = await store.CreateAppointmentCalendarAsync("unique name here");
This succeeds and I get a new calendar. But this calendar is visible in the phone's built-in calendar app. I don't want this calendar to be visible since it's for internal bookkeeping.
So I try to hide the calendar like this:
var store = await AppointmentManager.RequestStoreAsync(AppointmentStoreAccessType.AppCalendarsReadWrite);
var cacheCalendar = await store.CreateAppointmentCalendarAsync("unique name here");
cacheCalendar.IsHidden = true; // <---- make calendar hidden
await cacheCalendar.SaveAsync(); // <---- save; error here
When calling SaveAsyncI get the following exception:
Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"
Why can't I hide my calendar from the built-in phone calendar app? Is this an undocumented limitation? Are there other ways to do this?
(Note: I tested this on a Windows 10 Mobile as well as desktop Win 10 - same error.)
Edit/Addition: Since Anthony discovered the IsHidden property is documented as read-only in MSDN here is a screenshot from Visual Studio showing the public setter (which makes it compile, run and seemingly legit to call):
(The app targets Win 10 Build 10586 - maybe it's new, but unfinished?)
This was a bug in 10586 but if you’re using 14393 SDK you can use IsHidden if your app has rights to the calendar without an InvalidAccessException