Dart

XML NewChildBefore

Demonstrates the Chilkat.NewChildBefore method. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final xml = CkXml();

  xml.tag = 'order';
  xml.newChild2('order_billing_info|price_list', 'Listino Italia');
  xml.newChild2('order_billing_info|price_list_id', '1');
  xml.newChild2('order_billing_info|first_name', 'Francesco');

  print(xml.getXml());

  // We now have the following XML:

  // <?xml version="1.0" encoding="utf-8"?>
  // <order>
  //     <order_billing_info>
  //         <price_list>Listino Italia</price_list>
  //         <price_list_id>1</price_list_id>
  //         <first_name>Francesco</first_name>
  //     </order_billing_info>
  // </order>

  // If there is no "customer_id" element under "order_billing_info", then add it.
  if (xml.hasChildWithTag('order_billing_info|customer_id')) {
    print('customer_id already exists, nothing to do...');
    return;
  }

  // Add the customer_id element just before the "price_list" element.

  // Get the "order_billing_info" element
  final orderBillingInfo = xml.findChild('order_billing_info');

  // Call NewChildBefore to add an XML element <customer_id> before <price_list>
  // First get the index of the element price_list
  final index = orderBillingInfo.tagIndex('price_list');
  print('index = $index');

  // Add the "customer_id" element just before specified index.
  final xCustId = orderBillingInfo.newChildBefore(index, 'customer_id', '1234');

  print(xml.getXml());

  // We now have:

  // <?xml version="1.0" encoding="utf-8"?>
  // <order>
  //     <order_billing_info>
  //         <customer_id>1234</customer_id>
  //         <price_list>Listino Italia</price_list>
  //         <price_list_id>1</price_list_id>
  //         <first_name>Francesco</first_name>
  //     </order_billing_info>
  // </order>
}