internal static void UpdateDataWithEntities(Context context, IOrganizationService service, ref List <DataLine> data)
        {
            OrganizationRequestCollection retrieveMultipleRequestsCollection = new OrganizationRequestCollection( );
            int firstDataIndex = 0;
            int dataTotalCount = data.Count;

            for (int i = 0; i < dataTotalCount; i++)
            {
                if (data [i].IsOk)
                {
                    QueryExpression queryExpression = new QueryExpression
                    {
                        TopCount  = 1,
                        ColumnSet = new ColumnSet(false)
                    };
                    foreach (var item in context.ColumnItems.Where(a => a.ColumnType == ColumnTypeCode.DynamicConditionExpression))
                    {
                        queryExpression.Criteria.AddCondition(item.LogicalName, item.ConditionOperatorCode, data [i].LineData [context.ColumnItems.IndexOf(item)]);
                    }

                    retrieveMultipleRequestsCollection.Add(new RetrieveMultipleRequest( )
                    {
                        Query = queryExpression
                    });

                    if (retrieveMultipleRequestsCollection.Count( ) >= context.BatchSize)
                    {
                        ExecuteRetrieveMultiple(service, retrieveMultipleRequestsCollection, firstDataIndex, ref data);
                        //initialisation
                        retrieveMultipleRequestsCollection.Clear( );
                        firstDataIndex = i + 1;
                    }
                }
            }
            if (retrieveMultipleRequestsCollection.Count != 0)
            {
                ExecuteRetrieveMultiple(service, retrieveMultipleRequestsCollection, firstDataIndex, ref data);
            }
        }