Opc.Ua.Sample.Program.HistoryUpdate C# (CSharp) Method

        static void HistoryUpdate(Session session)
        {
            DiagnosticInfoCollection diagnosticInfos;

            // translate browse paths.
            IList<NodeOfInterest> nodeIds;

            nodeIds = GetNodeIds(session, Opc.Ua.Objects.ObjectsFolder,
                VariableBrowsePaths.ToArray());

            ExtensionObjectCollection eoc = new ExtensionObjectCollection();
            for (int ii = 0; ii < nodeIds.Count; ii++)
            {
                UpdateDataDetails updateDetails = new UpdateDataDetails();

                updateDetails.NodeId = nodeIds[ii].NodeId;
                updateDetails.PerformInsertReplace = PerformUpdateType.Update;
                updateDetails.UpdateValues = new DataValueCollection();

                for (int jj = 0; jj <= 5; jj++)
                {
                    DataValue dv = new DataValue(new Variant(jj*10), StatusCodes.Good, new DateTime(2008, 01, 01, 12, 0, jj*2));
                    updateDetails.UpdateValues.Add(dv);
                }
                ExtensionObject eo = new ExtensionObject(updateDetails.TypeId, updateDetails);
                eoc.Add(eo);
            }

            HistoryUpdateResultCollection historyUpdateResults;

            ResponseHeader responseHeader =
                session.HistoryUpdate(null, eoc, out historyUpdateResults, out diagnosticInfos);

            
            // process results.

            for (int ii = 0; ii < historyUpdateResults.Count; ii++)
            {
                HistoryUpdateResult historyUpdateResult = historyUpdateResults[ii];

                Console.WriteLine("HistoryUpdate result code for {0}:  {1}", VariableBrowsePaths[ii], historyUpdateResult.StatusCode.ToString());

                if (StatusCode.IsGood(historyUpdateResult.StatusCode))
                {
                    for (int jj = 0; jj < historyUpdateResult.OperationResults.Count; jj++)
                    {
                        Console.WriteLine("    {0}: {1}", jj, historyUpdateResult.OperationResults[jj]);
                    }
                    Console.WriteLine("");
                }
            }
        }
    }