Opc.Ua.Server.AggregateCalculator.GetValues C# (CSharp) Method

        protected List<DataValue> GetValues(TimeSlice slice)
        {
            // check if slice is beyond end of available data.
            if (CompareTimestamps(slice.StartTime, m_values.Last) > 0 || CompareTimestamps(slice.EndTime, m_values.First) < 0)
            {
                return null;
            }

            List<DataValue> values = new List<DataValue>();

            // initialize slice from value list.
            for (LinkedListNode<DataValue> ii = slice.Begin; ii != null; ii = ii.Next)
            {
                if (TimeFlowsBackward)
                {
                    if (CompareTimestamps(slice.EndTime, ii) < 0)
                    {
                        break;
                    }

                    if (CompareTimestamps(slice.StartTime, ii) < 0)
                    {
                        values.Add(ii.Value);
                    }
                }
                else
                {
                    if (CompareTimestamps(slice.EndTime, ii) <= 0)
                    {
                        break;
                    }

                    if (CompareTimestamps(slice.StartTime, ii) <= 0)
                    {
                        values.Add(ii.Value);
                    }
                }
            }

            return values;
        }