private void get_thong_tin_don_hang()
 {
     US_V_GD_DON_DAT_HANG v_us = new US_V_GD_DON_DAT_HANG();
     DS_V_GD_DON_DAT_HANG v_ds = new DS_V_GD_DON_DAT_HANG();
     v_us.FillDataset(v_ds,"where id="+ CIPConvert.ToDecimal(m_hdf_id_don_hang.Value));
     m_hdf_ma_don_hang.Value = v_ds.V_GD_DON_DAT_HANG.Rows[0]["MA_HD"].ToString();
     DateTime v_ngay_dat_hang = (DateTime)v_ds.V_GD_DON_DAT_HANG.Rows[0]["NGAY_DAT_HANG"];
     m_hdf_ngay_dat.Value = v_ngay_dat_hang.ToString("dd/MM/yyyy");
     m_hdf_lan_dat.Value = v_ds.V_GD_DON_DAT_HANG.Rows[0]["LAN"].ToString();
 }
 private void load_data_to_chi_tiet_grid()
 {
     decimal v_id_trung_tam = CIPConvert.ToDecimal(m_hdf_id_trung_tam.Value);
     US_V_GD_DON_DAT_HANG v_us = new US_V_GD_DON_DAT_HANG();
     DS_V_GD_DON_DAT_HANG v_ds = new DS_V_GD_DON_DAT_HANG();
     v_us.FillDataset(v_ds, v_id_trung_tam, CIPConvert.ToDatetime(m_txt_tu_ngay.Text), CIPConvert.ToDatetime(m_txt_den_ngay.Text));
     m_grv_chi_tiet_bc.DataSource = v_ds.V_GD_DON_DAT_HANG;
     m_grv_chi_tiet_bc.DataBind();
 }