BKI_DichVuMatDat.US.US_DM_NHAN_VIEN.BangThongKeNhanVien C# (CSharp) Method

        public DataSet BangThongKeNhanVien(DateTime ip_dat_tai_ngay)
        {
            CStoredProc v_sp = new CStoredProc("pr_thong_ke_nhan_vien");
            v_sp.addDatetimeInputParam("@ip_dat_tai_ngay", ip_dat_tai_ngay);

            DataSet v_ds_op = new DataSet();
            v_ds_op.Tables.Add();

            v_sp.fillDataSetByCommand(this, v_ds_op);
            return v_ds_op;
        }

 private void load_data_2_grid()
 {
     US_DM_NHAN_VIEN v_us_nv = new US_DM_NHAN_VIEN();
     DataSet v_ds_source = v_us_nv.BangThongKeNhanVien(m_dat_tai_ngay.DateTime);
     m_pvg_main.DataSource = v_ds_source.Tables[0];
 }