Question

I need to change appointment status to meeting, so that it invitations can be send by one click. But Appointment.AppointmentStatus and Appointment.IsMeeeting are read only properties. I ve found, using reflector, that PropertyBag class is used for setting and getting items properties, but it s also internal. Can I change this properties somehow?

Answer 1

I manage to do it. Steps are not so simple and logical, but here they are:

var extendedProperty = new ExtendedPropertyDefinition(new Guid("00062002-0000-0000-C000-000000000046"), 0x8217, MapiPropertyType.Integer);
meeting.SetExtendedProperty(extendedProperty, 1);

where Guid is PropertySet of appointments, and that strange number is MeetingStatus property id. And that s all. "Send" button is active by default.

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