Revit二次开发之“添加对象到选择集”

选择集是个集合，把元素添加到这个集合就选中了元素。

[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
//[Journaling(JournalingMode.NoCommandData)]
public class SelectObj : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
    {
        UIDocument uiDoc = commandData.Application.ActiveUIDocument;
        Selection selection = uiDoc.Selection;

        //测试找到ElementId
        //Reference refelem = selection.PickObject(ObjectType.Element, "选择");
        //MessageBox.Show(refelem.ElementId.ToString());//618621

        //根据Id找到元素的方法
        ElementId elId1 = new ElementId(618621);
        Element el1 = commandData.Application.ActiveUIDocument.Document.get_Element(elId1);

        ElementId elId2 = new ElementId(618688);
        Element el2 = commandData.Application.ActiveUIDocument.Document.get_Element(elId2);

        //添加到选择集
        selection.Elements.Add(el1);
        selection.Elements.Add(el2);

        return Result.Succeeded;
    }
}

from:http://revit.5d6d.com/thread-1039-1-4.html