public bool Delete(List <int> ids)
        {
            using (FinanceEntities context = factory.CreateContext())
            {
                foreach (var id in ids)
                {
                    var ef = new BalanceDate()
                    {
                        BalanceDateId = id
                    };
                    context.Entry(ef).State = EntityState.Deleted;
                }

                // deletes are cascaded to BalanceBankAccount
                context.SaveChanges();
            }
            return(true);
        }
        public bool Delete(List<int> ids)
        {
            using (FinanceEntities context = factory.CreateContext())
            {
                foreach (var id in ids)
                {
                    var ef = new BalanceDate() { BalanceDateId = id };
                    context.Entry(ef).State = EntityState.Deleted;
                }

                // deletes are cascaded to BalanceBankAccount
                context.SaveChanges();
            }
            return true;
        }