public bool AllowElement(Element elem)
 {
     if ((_selectFilterElem == null || _selectFilterElem.Contains(elem.Id)) &&
         elem.Category.Name == "Murs" && elem.LevelId == _levelId)
     {
         return(true);
     }
     return(false);
 }
        public bool AllowElement(Element elem)
        {
            FamilyInstance fi = elem as FamilyInstance;

            if ((_selectFilterElem == null || _selectFilterElem.Contains(elem.Id)) &&
                fi.Category.Name == Properties.Settings.Default.CATEGORY_NAME_BEAM && fi.Host.Id == _levelId)
            {
                return(true);
            }
            return(false);
        }