group 就是吧一些有關系的對象放在一個組里面 [Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
//[Journaling(JournalingMode.NoCommandData)]
public?class?cmdGroup?:?IExternalCommand
{
????public?Result?Execute(ExternalCommandData?cmdData,?ref?string?message,?ElementSet?elements)
????{
????????UIDocument?uiDoc?=?cmdData.Application.ActiveUIDocument;
????????Selection?selection?=?uiDoc.Selection;

????????Transaction?ts?=?new?Transaction(uiDoc.Document,?"group");
????????ts.Start();

????????Group?group?=?null;
????????ElementSet?selections?=?uiDoc.Selection.Elements;
????????if?(selections.Size?>?0)
????????{
????????????group?=?uiDoc.Document.Create.NewGroup(selections);
????????}
????????group.GroupType.Name?=?"firstGroup";

????????//遍歷一下group
????????FilteredElementCollector?collector?=?new?FilteredElementCollector(uiDoc.Document);
????????ICollection<Element>?collection?=?collector.OfClass(typeof(Group)).ToElements();
????????foreach?(Element?el?in?collection)
????????{
????????????TaskDialog.Show("group",?el.Name);
????????}

????????ts.Commit();

????????return?Result.Succeeded;
????}
}from:http://revit.5d6d.com/thread-1216-1-1.html

轉載于:https://www.cnblogs.com/greatverve/archive/2011/08/29/revit-group.html

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