BKI_DichVuMatDat.DanhMuc.F110_dm_chuc_vu_de.check_ma_cv_da_ton_tai C# (CSharp) Method

        private bool check_ma_cv_da_ton_tai()
        {
            US_DM_CHUC_VU v_us = new US_DM_CHUC_VU();
            DS_DM_CHUC_VU v_ds = new DS_DM_CHUC_VU();
            v_us.FillDataset(v_ds, "where ma_chuc_vu = N'" + m_txt_ma_chuc_vu.Text +"'");
            if (m_us.strMA_CHUC_VU != m_txt_ma_chuc_vu.Text && v_ds.Tables[0].Rows.Count !=0)
            {
                return true;
            }
            return false;
        }