topic How to filter elements through the Tab? in Revit API Forum

How to filter elements through the Tab?

Anonymous — Wed, 19 Sep 2018 02:04:06 GMT

The title is maybe a little confusing. For example, I had a List<Element> elements. As shown in the figure below, the System Tab owns various element types: HVAC type, Fabrication type, Mechanical type, Piping type, Electrical type. I need to classify the elements list by these types. Is there any method to implement this?

Re: How to filter elements through the Tab?

naveen.kumar.t — Wed, 19 Sep 2018 07:31:01 GMT

Use FilteredElementCollector to collect elements and get the type of the elements and with the help of the type classify the elements

 FilteredElementCollector Collector = new FilteredElementCollector(doc).WhereElementIsNotElementType();
                IList<ElementId> all_eids = Collector.ToElementIds() as IList<ElementId>;

                IList<ElementId> mech_ids = new List<ElementId>();
                IList<ElementId> elec_ids = new List<ElementId>();
                IList<ElementId> HVAC_ids = new List<ElementId>();
                IList<ElementId> piping_ids = new List<ElementId>();
                IList<ElementId> fabrication_ids = new List<ElementId>();

                foreach(ElementId eid in all_eids)
                {
                    Element e = doc.GetElement(eid);
                    Type T = e.GetType() as Type;
                    if(T.Name.Contains("Mechanical"))
                    {
                        mech_ids.Add(e.Id);
                    }
                    if(T.Name.Contains("Electrical"))
                    {
                        elec_ids.Add(e.Id);
                    }
                    if(T.Name.Contains("HVAC"))
                    {
                        HVAC_ids.Add(e.Id);
                    }
                    if(T.Name.Contains("Piping"))
                    {
                        piping_ids.Add(e.Id);
                    }
                    if(T.Name.Contains("Fabrication"))
                    {
                        fabrication_ids.Add(e.Id);
                    }

                }

Re: How to filter elements through the Tab?

naveen.kumar.t — Wed, 19 Sep 2018 10:36:35 GMT

Hi @Anonymous,

You can also approach by using with the below code

 FilteredElementCollector mech_coll = new FilteredElementCollector(doc).OfClass(typeof(MechanicalSystem)).WhereElementIsNotElementType();
                IList<ElementId> mech_ids = mech_coll.ToElementIds() as IList<ElementId>;