(Delphi ActiveX) Iterate over Direct Children with a Specific Tag

Demonstrates how to iterate over direct children having a specific tag.

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

<root>
    <fruit color="red">apple</fruit>
    <fruit color="green">pear</fruit>
    <veg color="orange">carrot</veg>
    <meat animal="cow">beef</meat>
    <xyz>
        <fruit color="blue">blueberry</fruit>
        <veg color="green">broccoli</veg>
    </xyz>
    <fruit color="purple">grape</fruit>
    <cheese color="yellow">cheddar</cheese>
</root>

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
xml: TChilkatXml;
child: IChilkatXml;
numWithTag: Integer;
i: Integer;
success: Integer;

begin
xml := TChilkatXml.Create(Self);

// The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
success := xml.LoadXmlFile('fruit.xml');
if (success <> 1) then
  begin
    Memo1.Lines.Add(xml.LastErrorText);
    Exit;
  end;

//  Get the number of direct children having the tag "fruit"
numWithTag := xml.NumChildrenHavingTag('fruit');

if (numWithTag > 0) then
  begin

    for i := 0 to numWithTag - 1 do
      begin
        child := xml.GetNthChildWithTag('fruit',i);
        Memo1.Lines.Add(IntToStr(i) + ': ' + child.Tag + ' : ' + child.Content);

      end;

    Memo1.Lines.Add('-----');

    // Do the same as the above loop, but instead of creating
    // a new object instance for each child, call GetNthChildWithTag2 to
    // update the object's reference instead.
    for i := 0 to numWithTag - 1 do
      begin
        // Navigate to the Nth child.  
        success := xml.GetNthChildWithTag2('fruit',i);
        Memo1.Lines.Add(IntToStr(i) + ': ' + xml.Tag + ' : ' + xml.Content);
        // Navigate back up to the parent:
        success := xml.GetParent2();
      end;

    Memo1.Lines.Add('-----');
  end;
end;