RVTDocs.com
Namespace: Autodesk.Revit.DB

ElementSet

Class
Description:
A set that contains element objects.
Inheritance Hierarchy:
System.Object
  Autodesk.Revit.DB.APIObject
    Autodesk.Revit.DB.ElementSet
Syntax
public class ElementSet : APIObject, IEnumerable
Examples
ICollection<ElementId> selectedIds = uidoc.Selection.GetElementIds();

string info = "Selected elements:\n";
foreach (ElementId id in selectedIds)
{
    Element elem = document.GetElement(id);
    info += elem.Name + "\n";
}

TaskDialog.Show("Revit",info);