private void load_danh_sach_don_vi()
 {
     US_DM_DON_VI v_us = new US_DM_DON_VI();
     DS_DM_DON_VI v_ds = new DS_DM_DON_VI();
     v_us.FillDataset(v_ds, "order by SO_THU_TU");
     m_sle_chon_don_vi.Properties.DataSource = v_ds.Tables[0];
 }
 //check validate data
 private bool check_ma_don_vi_is_exist()
 {
     US_DM_DON_VI v_us = new US_DM_DON_VI();
     DS_DM_DON_VI v_ds = new DS_DM_DON_VI();
     v_us.FillDataset(v_ds, "where ma_don_vi = N'" + m_txt_ma_dv.Text + "'");
     if (m_txt_ma_dv.Text != m_us_dm_dv.strMA_DON_VI && v_ds.Tables[0].Rows.Count !=0)
     {
         return true;
     }
     return false;
 }
        private void load_data_2_tree()
        {
            US_DM_DON_VI v_us_dv = new US_DM_DON_VI();
            DS_DM_DON_VI v_ds_dv = new DS_DM_DON_VI();
            v_us_dv.FillDataset(v_ds_dv);

            m_tree_don_vi.ParentFieldName = DM_DON_VI.ID_DON_VI_CAP_TREN;
            m_tree_don_vi.DataSource = v_ds_dv.Tables[0];
            m_tree_don_vi.RefreshDataSource();

            m_tree_don_vi.ExpandAll();
        }
 private void load_data_to_sle_don_vi()
 {
     US_DM_DON_VI v_us = new US_DM_DON_VI();
     DS_DM_DON_VI v_ds = new DS_DM_DON_VI();
     v_us.FillDataset(v_ds);
     m_sle_don_vi.Properties.DataSource = v_ds.Tables[0];
     m_sle_don_vi.Properties.DisplayMember = DM_DON_VI.TEN_DON_VI;
     m_sle_don_vi.Properties.ValueMember = DM_DON_VI.ID;
     //m_sle_don_vi.Properties.NullText = "---Chọn đơn vị---";
 }
 private DataTable load_data_to_don_vi()
 {
     US_DM_DON_VI v_us = new US_DM_DON_VI();
     DS_DM_DON_VI v_ds = new DS_DM_DON_VI();
     v_us.FillDataset(v_ds);
     return v_ds.Tables[0];
 }
 private DataSet load_data_2_ds_v_dm_don_vi()
 {
     US_DM_DON_VI v_us = new US_DM_DON_VI();
     DS_DM_DON_VI v_ds = new DS_DM_DON_VI();
     v_us.FillDataset(v_ds);
     return v_ds;
 }
        private DS_DM_DON_VI load_data_2_dm_loai_don_vi()
        {
            DS_DM_DON_VI v_ds = new DS_DM_DON_VI();
            US_DM_DON_VI v_us = new US_DM_DON_VI();

            v_us.FillDataset(v_ds);

            return v_ds;
        }