public bool SaveLockDB(List <LockDBCompany> saveData)
        {
            using (DbContextTransaction transaction = Context.Database.BeginTransaction())
            {
                try
                {
                    long seq = LockDBCompanyDAO.GetLockDBCompanySEQ();
                    foreach (LockDBCompany data in saveData)
                    {
                        switch (data.Status)
                        {
                        // Add new
                        case ModifyMode.Insert:
                            seq++;
                            data.ClockDBID = GenerateID.LockDBID(seq);
                            this.LockDBCompanyDAO.InsertLockDB(data);
                            break;

                        // Update
                        case ModifyMode.Update:
                            this.LockDBCompanyDAO.UpdateLockDB(data);
                            break;

                        // Delete
                        case ModifyMode.Delete:
                            this.LockDBCompanyDAO.DeleteLockDB(data);
                            break;
                        }
                    }
                    transaction.Commit();
                    return(true);
                }
                catch (Exception e)
                {
                    transaction.Rollback();
                    Console.WriteLine("Update data fail.\r\n" + e.Message);
                    return(false);
                }
            }
        }