partial void Deleteline_information(line_information instance);
 partial void Updateline_information(line_information instance);
 partial void Insertline_information(line_information instance);
 private void detach_line_informations(line_information entity)
 {
     this.SendPropertyChanging();
     entity.station = null;
 }
 private void attach_line_informations(line_information entity)
 {
     this.SendPropertyChanging();
     entity.line = this;
 }