Opc.Ua.Com.Client.ComHdaClientNodeManager.HistoryReadAttribute C# (CSharp) Method

        private ServiceResult HistoryReadAttribute(
            ServerSystemContext context,
            ComHdaClient client,
            ReadRawModifiedDetails details,
            TimestampsToReturn timestampsToReturn,
            HistoryReadValueId nodeToRead,
            HdaParsedNodeId parsedNodeId,
            HistoryReadResult result)
        {
            // create the request or load it from a continuation point.
            HdaHistoryReadAttributeRequest request = null;

            if (nodeToRead.ContinuationPoint == null)
            {
                // create a new request.
                request = new HdaHistoryReadAttributeRequest(parsedNodeId.RootId, parsedNodeId.AttributeId, details, nodeToRead);

                // fetch all of the data at once.
                result.StatusCode = client.ReadAttributeHistory(request);
            }
            else
            {
                request = LoadContinuationPoint(context, nodeToRead.ContinuationPoint) as HdaHistoryReadAttributeRequest;

                if (request == null)
                {
                    return StatusCodes.BadContinuationPointInvalid;
                }
            }

            // select a subset of the results.
            if (StatusCode.IsGood(result.StatusCode))
            {
                request.Results = new DataValueCollection();
                request.GetHistoryResults(context, nodeToRead, request.Results);
            }
            
            // fill in the results.
            if (request.Results != null)
            {
                HistoryData data = new HistoryData();                
                data.DataValues = request.Results;
                result.HistoryData = new ExtensionObject(data);
            }

            // create a new continuation point.
            if (!request.Completed)
            {
                result.ContinuationPoint = SaveContinuationPoint(context, request);
            }

            return result.StatusCode;
        }