BKI_DichVuMatDat.NghiepVu.f303_gd_cham_cong_lam_them.save_data C# (CSharp) Method

        private void save_data()
        {
            splashScreenManager1.ShowWaitForm();
            delete_du_lieu_cu();
            insert_gd_cham_cong_lam_them();
            splashScreenManager1.CloseWaitForm();
            XtraMessageBox.Show("Lưu thành công");
            m_cmd_luu_cham_cong_lam_them.Enabled = false;
            m_grc.DataSource = null;
        }