private static bool SetNodeAttributeValue(Oid nodeId, string value, IServerSession session) { IModelFactory dacFactory = session.DataAccess.ModelFactory; INodeBroker nodeBroker = session.DataAccess.Brokers.Node; ISelector nodeIdSel = dacFactory.CreateSelectorById(nodeId); Console.WriteLine("Updating attribute values for Node {0}... ", nodeId); NodeAttributeValues attrValues; using (var result = nodeBroker.ReadSingle(nodeIdSel, null)) { if (result.IsSuccess) { attrValues = result.Value.Attributes; } else { Console.WriteLine("failed: " + result.ToString()); return(false); } } IChangeSet changes = session.DataAccess.CreateChangeSet(); INode node = session.DataAccess.ModelFactory.CreateNode(); node.Attributes = attrValues; node.Attributes[ATTRIBUTE_NAME] = value; nodeBroker.UpdateNodes(changes, node, nodeIdSel); using (var result = changes.Save()) { if (result.IsSuccess) { Console.WriteLine("success"); return(true); } else { Console.WriteLine("failed: " + result.ToString()); return(false); } } }