ICollection<FamilySymbol> famType = new FilteredElementCollector(doc)
.OfCategory(BuiltInCategory.OST_ElectricalEquipment)
.OfClass(typeof(FamilySymbol))
.Cast<FamilySymbol>()
.ToList();
foreach (FamilySymbol ft in famType)
{
var getPar = ft.LookupParameter(serParam);
if (ft.LookupParameter(serParam) == null)
serParam = "null";
else
serParam = "exist";
str += ft.Name + " " + ft.Family.Name + " " + serParam + Environment.NewLine;
}
Clipboard.SetText(str);
TaskDialog.Show("Systems", "Скопируйте текст в блокнот");