请问一下，我想在opm中根据选中的管线获取管线上的支吊架如何实现呢？

        private static string Relationship = "DEVICE_HAS_SUPPORT";
        public static void Run()
        {
            // pipe
            Element element = Utils.Utils.GetASelectedElement();
            if (element == null)
            {
                return;
            }

            var instances = DgnECManager.Manager.GetElementProperties(element, ECQueryProcessFlags.SearchAllClasses);
            var instance = instances.ElementAt(1);//pipeInstance
            List<IECRelationshipInstance> relationships = DgnUtilities.GetAllRelationshipInstances(instance).Where(e => e.ClassDefinition.Name == Relationship).ToList();
            foreach (var relationship in relationships)
            {
                IECInstance support = relationship.Target;
                var id = (support as IDgnECInstance).Element.ElementId;
            }
        }

谢谢，我去试一下

谢谢，我去试一下