private DS_DM_LOAI_HOP_DONG load_data_2_ds_dm_loai_hd()
        {
            DS_DM_LOAI_HOP_DONG v_ds = new DS_DM_LOAI_HOP_DONG();
            US_DM_LOAI_HOP_DONG v_us = new US_DM_LOAI_HOP_DONG();

            v_us.FillDataset(v_ds);
            return v_ds;
        }
 private bool check_ma_loai_hd_da_ton_tai()
 {
     US_DM_LOAI_HOP_DONG v_us = new US_DM_LOAI_HOP_DONG();
     DS_DM_LOAI_HOP_DONG v_ds = new DS_DM_LOAI_HOP_DONG();
     v_us.FillDataset(v_ds, "where ma_loai_hop_dong = N'" + m_txt_ma_loai_hop_dong.Text + "'");
     if (m_us.strMA_LOAI_HOP_DONG != m_txt_ma_loai_hop_dong.Text && v_ds.Tables[0].Rows.Count !=0)
     {
         return true;
     }
     return false;
 }
 private void load_data_to_sle_loai_hop_dong()
 {
     US_DM_LOAI_HOP_DONG v_us = new US_DM_LOAI_HOP_DONG();
     DS_DM_LOAI_HOP_DONG v_ds = new DS_DM_LOAI_HOP_DONG();
     v_us.FillDataset(v_ds);
     m_sle_loai_hop_dong.Properties.DataSource = v_ds.Tables[0];
     m_sle_loai_hop_dong.Properties.DisplayMember = DM_LOAI_HOP_DONG.LOAI_HOP_DONG;
     m_sle_loai_hop_dong.Properties.ValueMember = DM_LOAI_HOP_DONG.ID;
 }
 private DataTable load_data_to_loai_hd()
 {
     US_DM_LOAI_HOP_DONG v_us = new US_DM_LOAI_HOP_DONG();
     DS_DM_LOAI_HOP_DONG v_ds = new DS_DM_LOAI_HOP_DONG();
     v_us.FillDataset(v_ds);
     return v_ds.Tables[0];
 }