Revit二次开发之“显示或隐藏3D视图中的元素“

判断3D视图{3D}

//显示或隐藏3D视图中的元素
[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
//[Journaling(JournalingMode.NoCommandData)]
public class HideUnHideIn3DView : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
    {
        UIDocument uiDoc = commandData.Application.ActiveUIDocument;
        Selection selection = uiDoc.Selection;

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

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

        Autodesk.Revit.DB.View view = uiDoc.Document.ActiveView;
        //判断是不是3D视图
        if (view.Name != "{3D}")
        {
            ts.RollBack();
            return Result.Cancelled;
        }
        //判断在此视图下是否可以隐藏
        if (el.CanBeHidden(view) == true)
        {
            ElementSet elementSet = new ElementSet();
            elementSet.Clear();
            elementSet.Insert(el);

            if (el.IsHidden(view) == true)
            {
                view.Unhide(elementSet);
            }
            else
            {
                view.Hide(elementSet);
            }
        }

        ts.Commit();

        return Result.Succeeded;
    }
}

from:http://revit.5d6d.com/thread-1077-1-4.html