Наследование: System.Windows.Forms.Form
 void m_cmd_chon_file_Click(object sender, EventArgs e)
 {
     try
     {
         f001_import_cong_tac v_frm = new f001_import_cong_tac();
         v_frm.ShowDialog();
         load_data_to_grid();
     }
     catch(Exception v_e)
     {
         CSystemLog_301.ExceptionHandle(v_e);
     }
 }