禁用使用 EWS 创建的约会提醒

Question

When I create an appointment with EWS, Outlook displays a reminder 15 minutes before the event. I want to disable this, and there is an option for it:

appointment.IsReminderSet = false;

but it simply does not work. In Outlook the event displays as "Reminder: None", but the reminder is sent nonetheless 15 minutes prior.

I also tried setting the ReminderMinutesBeforeStart property to -1 (which caused Outlook to not be able to display the invitation) or 0 and ReminderDueBy to past dates, but none of this helped, the reminder is still sent.

How can I really disable the reminder?

Answer 1

Turns out it is not enough to set IsReminderSet to false because the sender user's setting can overwrite it. You have to search for Options > Calendar > Default reminders and turn that off too:

You need to set this in Outlook for the sender user AND also use the option for the appointment described in the question:

appointment.IsReminderSet = false;

Only one is not enough, both needs to be set.