void m_cmd_chon_file_Click(object sender, EventArgs e)
 {
     try
     {
         f003_import_he_so_lns v_frm = new f003_import_he_so_lns();
         v_frm.ShowDialog();
         load_data_2_grv_k_hs_lns();
         load_data_2_grid_lns();
     }
     catch(Exception v_e)
     {
         CSystemLog_301.ExceptionHandle(v_e);
     }
 }