[MS C++] 查找带有某个EC属性的元素

请参考如下代码：

public static void TestECInstanceToElement()
        {
            string SchemaName = "TunnelAttributes";
            string ClassName = "TunnelCode";
            FindInstancesScope scope = FindInstancesScope.CreateScope(Session.Instance.GetActiveDgnModel(), new FindInstancesScopeOption(DgnECHostType.Element));
            FindInstancesScope scopeTemp = FindInstancesScope.CreateScope(Session.Instance.GetActiveDgnFile(), new FindInstancesScopeOption());
            int verMaj = 01, verMin = 0;
            IECSchema ecschema = DgnECManager.Manager.LocateSchemaInScope(scopeTemp, SchemaName, verMaj, verMin, SchemaMatchType.Latest);
            scopeTemp = FindInstancesScope.CreateScope(Session.Instance.GetActiveDgnFile(), new FindInstancesScopeOption());
            ecschema = DgnECManager.Manager.LocateSchemaInScope(scopeTemp, SchemaName, verMaj, verMin, SchemaMatchType.Latest);
            IECClass ecClass = ecschema.GetClass(ClassName);
            IECClass[] ecClassArr = new IECClass[1];
            ecClassArr[0] = ecClass;
            ECQuery ecQuery = new ECQuery(ecClassArr);
            DgnECInstanceCollection dgnECInsCol = DgnECManager.Manager.FindInstances(scope, ecQuery);
            foreach(var curVar in dgnECInsCol)
            {
                MessageCenter.Instance.ShowInfoMessage(curVar.Element.ElementId.ToString(), "", false);
            }
        }

谢谢郭工！~