Recherche EWS CalendarItems avec dernière modification

Question

Je cherche CalendarItems avec Exchange Web Services. Dans la documentation sur MSDN il y a un champ nommé LastModifiedTime.

Comment faire une requête CalendarItems par LastModifiedTime avec Manchettes Exchange Server?

Answer 1

J'ai trouvé un moyen à l'utilisation restictions

(mais en recherchant Si l'objet findItemRequest de findItemRequest.Item findItemRequest.Restictions propriétés sont définies Il donne l'erreur de combinaison ...)

Si seulement un élément ou Restictions est défini pour findItemRequest objet cela fonctionne

        List<CalendarInfo> calendarEvents = new List<CalendarInfo>();

        ExchangeServiceBinding esb = EWS.Helper.ExchangeHelper.GetExchangeBinding(credentials);

        // Form the FindItem request.
        FindItemType findItemRequest = new FindItemType();


        CalendarViewType calendarView = new CalendarViewType();
        calendarView.StartDate = criteria.StartDateAndTime;
        calendarView.EndDate = criteria.EndDateAndTime;

        if (criteria.MaxItemsToReturn > 0)
        {
            calendarView.MaxEntriesReturned = criteria.MaxItemsToReturn;
            calendarView.MaxEntriesReturnedSpecified = true;
        }

        findItemRequest.Item = calendarView;

        //--
        PathToExtendedFieldType sySyncProp = new PathToExtendedFieldType();



        sySyncProp.PropertyTag = "0x3008";
        sySyncProp.PropertyType = MapiPropertyTypeType.SystemTime;
        // Define restrictions

        RestrictionType ffRestriction = new RestrictionType();
        IsGreaterThanOrEqualToType ieGreater = new IsGreaterThanOrEqualToType();

        ieGreater.FieldURIOrConstant =  new FieldURIOrConstantType();
        ieGreater.FieldURIOrConstant.Item = new ConstantValueType();
        (ieGreater.FieldURIOrConstant.Item as ConstantValueType).Value = DateTime.Now.AddDays(-1).ToUniversalTime().ToString("u");
        ieGreater.Item = sySyncProp;

        ffRestriction.Item = ieGreater;

       findItemRequest.Restriction = ffRestriction;

        //--
        // Define which item properties are returned in the response.
        ItemResponseShapeType itemProperties = new ItemResponseShapeType();

        // Use the Default shape for the response. 
        itemProperties.BaseShape = DefaultShapeNamesType.AllProperties;
        //insert last modified time value also to responses
        PathToExtendedFieldType[] ptufta = new PathToExtendedFieldType[1];
        ptufta[0] = new PathToExtendedFieldType();
        ptufta[0].PropertyTag = "0x3008"; //Property Tag for LastModifiedTime 
        ptufta[0].PropertyType = MapiPropertyTypeType.SystemTime;
        itemProperties.AdditionalProperties = ptufta;

        findItemRequest.ItemShape = itemProperties;

        DistinguishedFolderIdType[] folderIDArray = new DistinguishedFolderIdType[1];
        folderIDArray[0] = new DistinguishedFolderIdType();
        folderIDArray[0].Id = DistinguishedFolderIdNameType.calendar;

        if (!string.IsNullOrEmpty(criteria.EmailAddress))
        {
            folderIDArray[0].Mailbox = new EmailAddressType();
            folderIDArray[0].Mailbox.EmailAddress = criteria.EmailAddress.Trim();
        }

        findItemRequest.ParentFolderIds = folderIDArray;

        // Define the traversal type.
        findItemRequest.Traversal = ItemQueryTraversalType.Shallow;

        try
        {
            // Send the FindItem request and get the response.
            FindItemResponseType findItemResponse = esb.FindItem(findItemRequest);

            // Access the response message.
            ArrayOfResponseMessagesType responseMessages = findItemResponse.ResponseMessages;
            ResponseMessageType[] rmta = responseMessages.Items;

            int folderNumber = 0;

            foreach (ResponseMessageType rmt in rmta)
            {
                // One FindItemResponseMessageType per folder searched.
                FindItemResponseMessageType firmt = rmt as FindItemResponseMessageType;

                if (firmt.RootFolder == null)
                    continue;

                FindItemParentType fipt = firmt.RootFolder;
                object obj = fipt.Item;

                // FindItem contains an array of items.
                if (obj is ArrayOfRealItemsType)
                {
                    ArrayOfRealItemsType items = (obj as ArrayOfRealItemsType);
                    if (items.Items == null)
                    {
                        // Console.WriteLine("Folder {0}: No items in folder", folderNumber);
                        folderNumber++;
                    }
                    else
                    {
                        CalendarInfo ce;
                        CalendarItemType cal;
                        foreach (ItemType it in items.Items)
                        {

                            if (it is CalendarItemType)
                            {
                                cal = (CalendarItemType)it;
                                ce = GetCalendarInfo(esb, cal);
                                calendarEvents.Add(ce);
                            }
                            //Console.WriteLine("Folder {0}: Item identifier: {1}", folderNumber, it.ItemId.Id);

                        }

                        folderNumber++;
                    }
                }
            }

            //Console.ReadLine();
        }
        catch (Exception e)
        {
            throw;
        }


        return calendarEvents;