public EcasWithFiles(Cas ecas)
        {
            var query = ecas.Where(eca =>
                                   (Convert.ToBoolean(eca.HasFiles)));

            list = query.ToList();
        }
        public TcasWithFiles(Cas tcas)
        {
            var query = tcas
                        .Where(tca =>
                               (Convert.ToBoolean(tca.HasFiles)));

            list = query.ToList();
        }