BKI_DichVuMatDat.NghiepVu.NhanSu.f309_quan_ly_cong_tac.get_option_filter C# (CSharp) Method

        private string get_option_filter()
        {
            if(radioButton1.Checked == true)
            {
                return "TAT_CA";
            }
            return "MOI_NHAT";
        }