Revit二次開發 擷取族名稱及族執行個體

本文章代碼功能是擷取目前項目檔案中所有的标準族執行個體，及載入族的族名稱，并顯示出來，效果如下：

代碼如下

using System.Collections.Generic;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
namespace Loadfamily
{
    [Transaction(TransactionMode.Manual)]
    public class ExamineFamily : IExternalCommand
    {
        List<string> list1 = new List<string>();
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            Document doc = commandData.Application.ActiveUIDocument.Document;
            FilteredElementCollector collector = new FilteredElementCollector(doc);
            collector.OfClass(typeof(FamilyInstance));//過濾擷取到目前檔案中所有的族執行個體
            IList<Element> CollectorList = collector.ToElements();
            string famliyName = "";
            int i1 = 0;//用來記錄項目中族執行個體個數
            for (int i = 0; i < CollectorList.Count; i++)
            {
                FamilyInstance fi = CollectorList[i] as FamilyInstance;
                string ss = fi.Symbol.FamilyName;
                if (list1.Contains(ss) == false)//合并相同族檔案名稱
                {
                    list1.Add(ss);
                    famliyName += ss + "\n";
                }
                i1++;
            }
            TaskDialog.Show("我是标題", "載入的族檔案有:"+"\n"+famliyName + "項目中一共" + i1+ "個族執行個體");
            return Result.Succeeded;
        }
    }
}