public async Task StructureTest() { var channel = new ClientSessionChannel( localDescription, certificateStore, new AnonymousIdentity(), EndpointUrl, loggerFactory: loggerFactory); await channel.OpenAsync(); var readRequest = new ReadRequest { NodesToRead = new[] { new ReadValueId { AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Structure") }, }, }; var readResponse = await channel.ReadAsync(readRequest); foreach (var result in readResponse.Results) { StatusCode.IsGood(result.StatusCode) .Should().BeTrue(); } // reading this node returns an array of ExtensionObjects var obj = readResponse.Results[0].Value; // create new DataValue for writing. Most servers reject writing values with timestamps. var newValue = new DataValue(obj); var writeRequest = new WriteRequest { NodesToWrite = new[] { new WriteValue { AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Structure"), Value = newValue }, }, }; var writeResponse = await channel.WriteAsync(writeRequest); foreach (var result in writeResponse.Results) { StatusCode.IsGood(result) .Should().BeTrue(); } logger.LogInformation($"Closing session '{channel.SessionId}'."); await channel.CloseAsync(); }