/// <summary>
/// delets all objects, pages and the page set itself
/// </summary>
/// <param name="Name">name of the page set</param>
public static void DeletePageSet(int PageSetID)
{
List <DisplayPageSet> l = ClsDisplayControler.DisplayPageSets();
DisplayPageSet dps = (from x in l where x.ID == PageSetID select x).FirstOrDefault();
ClsDisplayControler.DelDisplayPageSet(dps.ID);
}