過去バージョン

using System;
using Autodesk.Revit;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI.Selection;
using Autodesk.Revit.UI;
using Autodesk.Revit.Attributes;
using System.Collections.Generic;

namespace TestTool
{
    [Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]
    public class TestTool : IExternalCommand
    {
        public Autodesk.Revit.UI.Result Execute(ExternalCommandData commandData,
            ref string message, ElementSet elements)
        {

            UIDocument uidoc = commandData.Application.ActiveUIDocument;

            Document document = uidoc.Document;

            ElementCategoryFilter filter = new ElementCategoryFilter(BuiltInCategory.OST_Walls);

            FilteredElementCollector collector = new FilteredElementCollector(document);

            IList<Element> walls = collector.WherePasses(filter).WhereElementIsNotElementType().ToElements();

            String prompt = "The walls in the current document are:\n\t";

            foreach (Element e in walls)
            {
                prompt += "ID: " + e.Id + ", Name: " + e.Name + "\n\t";
            }

            TaskDialog.Show("Revit", prompt);

            return Autodesk.Revit.UI.Result.Succeeded;
        }
    }
}