UpdateItemType Class

[SerializableAttribute] 
[GeneratedCodeAttribute("wsdl", "2.0.50727.3038")] 
[DesignerCategoryAttribute("code")] 
[XmlTypeAttribute(Namespace="http://schemas.microsoft.com/exchange/services/2006/messages")] 
[DebuggerStepThroughAttribute] 
public class UpdateItemType : BaseRequestType

static void UpdateItem(ExchangeServiceBinding esb)
{
    // Create calendar items to contain each non-deletion update.
    CalendarItemType ciAppendRA = new CalendarItemType();
    CalendarItemType ciSetStart = new CalendarItemType();
    CalendarItemType ciSetEP = new CalendarItemType();

    // Add a new required attendee to the calendar item.
    ciAppendRA.RequiredAttendees = new AttendeeType[1];
    ciAppendRA.RequiredAttendees[0] = new AttendeeType();
    ciAppendRA.RequiredAttendees[0].Mailbox = new EmailAddressType();
    ciAppendRA.RequiredAttendees[0].Mailbox.EmailAddress = "mskinner@example.com";
    // Identify the field to append.
    PathToUnindexedFieldType appReqAttendees = new PathToUnindexedFieldType();
    appReqAttendees.FieldURI = UnindexedFieldURIType.calendarRequiredAttendees;
    // Add the calendar item and the identified appended field to
    // the ItemChangeDescriptionType. This is an AppendToItemFieldType.
    AppendToItemFieldType append = new AppendToItemFieldType();
    append.Item = appReqAttendees;
    append.Item1 = ciAppendRA;

    // Set a new start time on a calendar item.
    ciSetStart.Start = DateTime.Now;
    ciSetStart.StartSpecified = true;
    // Identify the field to set.
    PathToUnindexedFieldType modStartTime = new PathToUnindexedFieldType();
    modStartTime.FieldURI = UnindexedFieldURIType.calendarStart;
    // Add the calendar item and the identified set field to
    // the ItemChangeDescriptionType. This is a SetItemFieldType.
    SetItemFieldType set = new SetItemFieldType();
    set.Item = modStartTime;
    set.Item1 = ciSetStart;

    // Set a custom property on a calendar item.
    PathToExtendedFieldType setMyProperty = new PathToExtendedFieldType();
    setMyProperty.DistinguishedPropertySetId = DistinguishedPropertySetType.PublicStrings;
    setMyProperty.DistinguishedPropertySetIdSpecified = true;
    setMyProperty.PropertyName = "Milestone date";
    setMyProperty.PropertyType = MapiPropertyTypeType.String;
    // Identify the custom property to set.
    ciSetEP.ExtendedProperty = new ExtendedPropertyType[1];
    ciSetEP.ExtendedProperty[0] = new ExtendedPropertyType();
    ciSetEP.ExtendedProperty[0].ExtendedFieldURI = setMyProperty;
    ciSetEP.ExtendedProperty[0].Item = "2007-07-18";
    // Add the calendar item and the identified custom property
    // to the ItemChangeDescriptionType. This is an SetItemFieldType.
    SetItemFieldType setCustomProp = new SetItemFieldType();
    setCustomProp.Item = setMyProperty;
    setCustomProp.Item1 = ciSetEP;

    // Delete optional attendees from the calendar item.
    PathToUnindexedFieldType delOptAttendees = new PathToUnindexedFieldType();
    delOptAttendees.FieldURI = UnindexedFieldURIType.calendarOptionalAttendees;
    // Add the property to delete to the ItemChangeDescriptionType.
    DeleteItemFieldType deletion = new DeleteItemFieldType();
    deletion.Item = delOptAttendees;            

    // Create the identifier of the item to update.
    ItemIdType itemId = new ItemIdType();
    itemId.Id = "AAAlAE1BQG";
    itemId.ChangeKey = "DwAAABYAAA";

    // Create and populate the request.
    UpdateItemType request = new UpdateItemType();
    request.ItemChanges = new ItemChangeType[1] { new ItemChangeType() };
    request.ItemChanges[0].Item = itemId;
    request.ItemChanges[0].Updates = new ItemChangeDescriptionType[4];
    request.ItemChanges[0].Updates[0] = append;
    request.ItemChanges[0].Updates[1] = set;
    request.ItemChanges[0].Updates[2] = deletion;
    request.ItemChanges[0].Updates[3] = setCustomProp;

    request.ConflictResolution = ConflictResolutionType.AutoResolve;
    request.SendMeetingInvitationsOrCancellations = CalendarItemUpdateOperationType.SendToAllAndSaveCopy;
    request.SendMeetingInvitationsOrCancellationsSpecified = true;

    // Send the update request and receive the response.
    UpdateItemResponseType response = esb.UpdateItem(request);
    ArrayOfResponseMessagesType aormt = response.ResponseMessages;
    ResponseMessageType[] rmta = aormt.Items;

    foreach (ResponseMessageType rmt in rmta)
    {
        ItemInfoResponseMessageType respMsg = (rmt as ItemInfoResponseMessageType);
        foreach (ItemType item in respMsg.Items.Items)
        {
            Console.WriteLine("Item ID: " + item.ItemId.Id);
            Console.WriteLine("New change key: " + item.ItemId.ChangeKey);
            Console.ReadLine();
        }
    }
}