How to the Outlook Appointment series master from a single occurence

Question

I need to get the master appointment of the meeting series, when an appointment instance is opened.

I have tried the following (currentAppointment variable is of type AppointmentItem)

DateTime sd = currentAppointment.GetRecurrencePattern().PatternStartDate;
DateTime st = currentAppointment.GetRecurrencePattern().StartTime;

AppointmentItem ai = currentAppointment.GetRecurrencePattern().GetOccurrence(sd+st.TimeOfDay);

However, while this gets me the first appointment in the series, it has a RecurrenceState of olApptOccurrence.

How can I get a reference to the olApptMaster - ie the meeting series?

Answer 1

AppointmentItem.Parent will return the parent AppointmentItem for the recurrence instances and exceptions.

Answer 2

I have a method to create an appointment item with recurrence, but it´s almost the same as modifying one, tell me if that helps you and if you need further information.

Here is the code in C#

private void CreateNewRecurringAppointment(Outlook._Application OutlookApp) 
{ 
    Outlook.AppointmentItem appItem = null; 
    Outlook.RecurrencePattern pattern = null; 
    try 
    { 
        appItem = OutlookApp.CreateItem(Outlook.OlItemType.olAppointmentItem) 
           as Outlook.AppointmentItem; 
        // create a recurrence 
        pattern = appItem.GetRecurrencePattern(); 
        pattern.RecurrenceType = Outlook.OlRecurrenceType.olRecursWeekly; 
        pattern.StartTime = DateTime.Parse("9:00:00 AM"); 
        pattern.EndTime = DateTime.Parse("10:00:00 AM"); 
        // we can specify the duration instead of using the EndTime property 
        // pattern.Duration = 60; 
        pattern.PatternStartDate = DateTime.Parse("11/11/2011"); 
        pattern.PatternEndDate = DateTime.Parse("12/25/2011"); 
        appItem.Subject = "Meeting with the Boss"; 
        appItem.Save(); 
        appItem.Display(true); 
    } 
    catch (Exception ex) 
    { 
        System.Windows.Forms.MessageBox.Show(ex.Message); 
    } 
    finally 
    { 
        if (pattern != null) 
           System.Runtime.InteropServices.Marshal.ReleaseComObject(pattern); 
        if (appItem != null) 
           System.Runtime.InteropServices.Marshal.ReleaseComObject(appItem); 
    } 
} 

source: http://www.add-in-express.com/creating-addins-blog/2011/11/07/outlook-recurring-appointment/