如何在 Revit 中获取某个类别、类型和系列的所有元素

Question

I have a function where I would like to get all elements belonging to a certain category, type and family. I have their names as strings and would like to obtain the actual elements that meet the criteria.

I have tried a bit with the following:

    internal static void getElemetWithId(Document doc,string catName, string famname, string symbname)
    {

        Category category=null;
        foreach (var cat in  doc.Settings.Categories){
            if (((Category)cat).Name.Contains(catName))
            {
                category = (Category)cat;
                break;
            }
        }
        HashSet<Element> elements = new HashSet<Element>();
        elements.AddRange(GetFilteredElementCollector(doc, new ElementRetrievalOptions())
          .OfCategory(category).WhereElementIsElementType(famname).ToElements());
            }

However this doesn't work as OfCategory does not accept a Category as a argument (it does work for a builtInCategory) and WhereElementIsElementType does not seem to accept any argument.

A possible input for this function would be document, "Doors" , "M_Single-Flush" , "0915 x 2134mm"

Answer 1

You should look at the Revit SDK, http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=16777469 , and go through some of the sample code. You can also look at Jeremy's page: http://thebuildingcoder.typepad.com , and Harry's page: https://boostyourbim.wordpress.com for more sample code.

You should use the FilteredElementCollector Class to find all the Elements you'd be looking for:

FilteredElementCollector allInstances = new FilteredElementCollector(doc).OfClass(typeof(FamilyInstance)‌​).Where(q => (q as FamilyInstance).Symbol.Name == symbname);

Answer 2

You can get all the elements belonging to the certain category using FilteredElementCollector class. Pass the name of the certain family name in the query and you will get all the elements of required family and type. I have tried this on Revit 2019 recently.

List<Element> listOfElements = new FilteredElementCollector(doc).OfClass(typeof(FamilySymbol)).WhereElementIsElementType()
                .ToElements().Where(e => e.Name == elementName).ToList<Element>();

        ElementId symbolId = listOfElements[0].Id;

        FamilyInstanceFilter familyInstanceFilter= new FamilyInstanceFilter(doc, symbolId);
        IList<Element> familyInstances = new FilteredElementCollector(doc).WherePasses(familyInstanceFilter).ToElements();