Handling Recurring Events

Question

Hi All,
I'm developing software to integrate our systems with Exchange and have setup notification listeners for changes in an individual's calendar.
Because the "Deleted" event isn't being fired when an item is deleted from the users calendar, I'm instead using the modifed event to handle it all. When the event is fired this triggers another function which uses the following code to determine
if the appoinment exists:
Private Sub ExchangeModified(id As String)
Dim props As New PropertySet(BasePropertySet.IdOnly, AppointmentSchema.Subject)
Dim appt As Appointment = Nothing
Try
appt = Appointment.Bind(service, New ItemId(id), props)
appt.Load()
Catch ex1 As Microsoft.Exchange.WebServices.Data.ServiceResponseException
' object doesn't exist
Catch ex As Exception
Throw ex
End Try
If appt Is Nothing Then
DeletePortalAppointment(id)
Else
UpdatePortalAppointment(id)
End If
End Sub
If the appointment is found then the UpdatePortalAppointment() method is called which updates the database for our backend systems, otherwise delete the appointment from the database.
However when single instances of reccurring events are deleted from the calendar, Appt returns the ReccurringMaster appointment not the single deleted event.
Is there a way to force the single occurance to return not the master?
Thanks

Answer 1

check this
http://sharepoint.stackexchange.com/questions/23221/rest-api-expand-recurring-calendar-events
http://itblog.wolthaus.net/2011/12/rest-filter-datetime/
http://coder87.wordpress.com/category/sharepoint/sharepoint-2013/