Dart

XML Sort by Tag

See more XML Examples

Demonstrates the SortByTag method.

The input XML, available at http://www.chilkatsoft.com/data/fruitSort1.xml, is this:

<root>
    <fruits>
        <apple>
            <fuji>blah</fuji>
            <gala>blah</gala>
            <grannySmith>blah</grannySmith>
            <honeycrisp>blah</honeycrisp>
            <mcIntosh>blah</mcIntosh>
        </apple>
        <banana>blah</banana>
        <blackberry>blah</blackberry>
        <blueberry>blah</blueberry>
        <orange>blah</orange>
        <pear>blah</pear>
    </fruits>
</root>

Dart

import 'package:chilkat/chilkat.dart';

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

  // The sample input XML is available at http://www.chilkatsoft.com/data/fruitSort1.xml
  try {
    xml.loadXmlFile('fruitSort1.xml');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Sort the direct children under the "fruits" node by tag:
  final xSortRoot = xml.findChild('fruits');

  // Sort in ascending order.
  final bAscending = true;
  xSortRoot.sortByTag(bAscending);

  // Show the result:
  print(xml.getXml());

  // <root>
  //     <fruits>
  //         <apple>
  //             <grannySmith>blah</grannySmith>
  //             <gala>blah</gala>
  //             <fuji>blah</fuji>
  //             <mcIntosh>blah</mcIntosh>
  //             <honeycrisp>blah</honeycrisp>
  //         </apple>
  //         <banana>blah</banana>
  //         <blackberry>blah</blackberry>
  //         <blueberry>blah</blueberry>
  //         <orange>blah</orange>
  //         <pear>blah</pear>
  //     </fruits>
  // </root>

  // Sort the direct children under the "apple" node:
  xSortRoot.findChild2('apple');

  xSortRoot.sortByTag(bAscending);
  print(xml.getXml());

  // <root>
  //     <fruits>
  //         <apple>
  //             <fuji>blah</fuji>
  //             <gala>blah</gala>
  //             <grannySmith>blah</grannySmith>
  //             <honeycrisp>blah</honeycrisp>
  //             <mcIntosh>blah</mcIntosh>
  //         </apple>
  //         <banana>blah</banana>
  //         <blackberry>blah</blackberry>
  //         <blueberry>blah</blueberry>
  //         <orange>blah</orange>
  //         <pear>blah</pear>
  //     </fruits>
  // </root>
}