EWS: l'azione Imposta non è valida per la proprietà durante l'aggiornamento di Richieste obbligatorie di un appuntamento

Question

Sto tentando di aggiornare un appuntamento esistente ma EWS sta lanciando "Set action is invalid for property.". Ho rivisto tutti i valori impostati sull'oggetto appuntamento, ma non riesco a capire la causa effettiva di questo errore.

Ecco il mio frammento di codice:

ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010_SP1); 
service.Credentials = new WebCredentials("ews_calendar", PASSWORD, "acme"); 
service.Url = new Uri("https://acme.com/EWS/Exchange.asmx"); 
ImpersonatedUserId impUser = new ImpersonatedUserId(); 
service.ImpersonatedUserId = new ImpersonatedUserId(ConnectingIdType.SmtpAddress, "tin.tin@acme.com"); 

string itemId = ""; 
DateTime PreviousStartDate = new DateTime(2012, 04, 02, 18, 00, 00); 
DateTime PreviousEndDate = new DateTime(2012, 04, 02, 18, 30, 00); 
CalendarView calView = new CalendarView(PreviousStartDate, PreviousEndDate); 
Appointment appointment = new Appointment(service); 
try 
{ 
    calView.PropertySet = new PropertySet(BasePropertySet.IdOnly, AppointmentSchema.Subject, AppointmentSchema.Start, AppointmentSchema.IsRecurring, AppointmentSchema.AppointmentType); 
    FindItemsResults<Appointment> findResults = service.FindAppointments(WellKnownFolderName.Calendar, calView); 

    List<Item> items = new List<Item>(); 
    foreach (Appointment appt in findResults.Items) 
    { 
     appt.Load(); 
     items.Add(appt); 
    } 

    if (items.Count > 0) 
    { 
     service.LoadPropertiesForItems(items, PropertySet.FirstClassProperties); 
     appointment = (Appointment) items[0]; 
     appointment.Load(new PropertySet(BasePropertySet.IdOnly, AppointmentSchema.Start, AppointmentSchema.ReminderDueBy, AppointmentSchema.End, AppointmentSchema.StartTimeZone, AppointmentSchema.EndTimeZone, AppointmentSchema.TimeZone)); 
    } 

    appointment.RequiredAttendees.Add("tin.tin@acme.com"); 

    appointment.Start = new DateTime(2012, 04, 02, 18, 00, 0); 
    appointment.End = new DateTime(2012, 04, 02, 18, 30, 0); 

    // throwing exception here -- Set action is invalid for property. 
    appointment.Update(ConflictResolutionMode.AlwaysOverwrite, SendInvitationsOrCancellationsMode.SendToAllAndSaveCopy); 
} 
catch (Exception ex) 
{ 
    // 
} 

[UPDATE]
È interessante notare che se io commento RequiredAttendees proprietà di appuntamento in codice di cui sopra, tutto sembra in ordine, ma non e-mail di notifica inviare ai partecipanti esistenti.

[UPDATE] Ciò sta accadendo solo per gli appuntamenti che vengono creati utilizzando iCal

[UPDATE]

richiesta XML:

POST https://acmemail.com/EWS/Exchange.asmx HTTP/1.1 
Content-Type: text/xml; charset=utf-8 
Accept: text/xml 
User-Agent: ExchangeServicesClient/14.02.0051.000 
Accept-Encoding: gzip,deflate 
Host: acmemail.com 
Cookie: exchangecookie=7d09b9f23afd4604bd17e3aa58aa8417 
Content-Length: 2410 
Expect: 100-continue 

<?xml version="1.0" encoding="utf-8"?> 
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> 
    <soap:Header> 
    <t:RequestServerVersion Version="Exchange2010_SP1" /> 
    <t:ExchangeImpersonation> 
     <t:ConnectingSID> 
     <t:PrincipalName>ews_test_user</t:PrincipalName> 
     </t:ConnectingSID> 
    </t:ExchangeImpersonation> 
    </soap:Header> 
    <soap:Body> 
    <m:UpdateItem ConflictResolution="AlwaysOverwrite" SendMeetingInvitationsOrCancellations="SendOnlyToAll"> 
     <m:ItemChanges> 
     <t:ItemChange> 
      <t:ItemId Id="AAMkADJiMGQ4ZWFkLWE0ODYtNDEyMC1hYWZjLTQ1ZGMyZDIzM2VjNwBGAAAAAAD9u1KcpHbwQZAL98T9qOWmBwCvOn1fMRuFRKKSfl9h8ZjeAAAAoz9XAABZjjBc5hT0S7NHrduyqC0sAAUlvIcSAAA=" ChangeKey="DwAAABYAAABkzlk3d4yMS7uVVX+i+BnJAAAABLU2" /> 
      <t:Updates> 
      <t:SetItemField> 
       <t:FieldURI FieldURI="item:Body" /> 
       <t:CalendarItem> 
       <t:Body BodyType="HTML">TEST 3</t:Body> 
       </t:CalendarItem> 
      </t:SetItemField> 
      <t:SetItemField> 
       <t:FieldURI FieldURI="calendar:RequiredAttendees" /> 
       <t:CalendarItem> 
       <t:RequiredAttendees> 
        <t:Attendee> 
        <t:Mailbox> 
         <t:Name>Tin.Tin</t:Name> 
         <t:EmailAddress>Tin.Tin@acmegroup.com</t:EmailAddress> 
         <t:RoutingType>SMTP</t:RoutingType> 
         <t:MailboxType>Mailbox</t:MailboxType> 
        </t:Mailbox> 
        </t:Attendee> 
        <t:Attendee> 
        <t:Mailbox> 
         <t:Name>Tin.Tin</t:Name> 
         <t:EmailAddress>Tin.Tin@acmegroup.com</t:EmailAddress> 
         <t:RoutingType>SMTP</t:RoutingType> 
         <t:MailboxType>OneOff</t:MailboxType> 
        </t:Mailbox> 
        </t:Attendee> 
       </t:RequiredAttendees> 
       </t:CalendarItem> 
      </t:SetItemField> 
      </t:Updates> 
     </t:ItemChange> 
     </m:ItemChanges> 
    </m:UpdateItem> 
    </soap:Body> 
</soap:Envelope> 

risposta XML:

<?xml version="1.0" encoding="utf-8"?> 
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> 
    <s:Header> 
     <h:ServerVersionInfo MajorVersion="14" MinorVersion="1" MajorBuildNumber="355" MinorBuildNumber="2" Version="Exchange2010_SP1" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"/> 
    </s:Header> 
    <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
     <m:UpdateItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"> 
      <m:ResponseMessages> 
       <m:UpdateItemResponseMessage ResponseClass="Error"> 
        <m:MessageText>Set action is invalid for property.</m:MessageText> 
        <m:ResponseCode>ErrorInvalidPropertySet</m:ResponseCode> 
        <m:DescriptiveLinkKey>0</m:DescriptiveLinkKey> 
        <m:MessageXml> 
         <t:FieldURI FieldURI="calendar:RequiredAttendees"/></m:MessageXml> 
        <m:Items/> 
       </m:UpdateItemResponseMessage> 
      </m:ResponseMessages> 
     </m:UpdateItemResponse> 
    </s:Body> 
</s:Envelope> 

Answer 1

è necessario aggiungere al vostro AppointmentSchema.RequiredAttendeesPropertySet se si desidera modificarlo (RequiredAttendees.Add è impostando la proprietà dello schema appuntamento). Non è possibile modificare una proprietà che non è inclusa in PropertySet.

appointment.Load(new PropertySet(BasePropertySet.IdOnly, AppointmentSchema.Start, AppointmentSchema.ReminderDueBy, AppointmentSchema.End, AppointmentSchema.StartTimeZone, AppointmentSchema.EndTimeZone, AppointmentSchema.TimeZone, AppointmentSchema.RequiredAttendees)); 

Dopo aver esaminato il tuo XML risposta - sembra che questo problema è legato alla AppointmentState. Vedere this MSDN post come riferimento. La risposta XML indica il campo che non riesce ad aggiornare (calendar:RequiredAttendees).