(Delphi) Adding Attributes to an XML Node

Demonstrates how to add attributes to existing XML nodes.

The input XML is this:

<abc>
    <xyz>
        <mmm>123</mmm>
    </xyz>
</abc>

The output XML is this:

<abc a="123">
    <xyz b="456">
        <mmm c="789" d="000">123</mmm>
    </xyz>
</abc>

Download Chilkat XML ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATXMLLib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
xml: CHILKATXMLLib_TLB.IChilkatXml;
success: Integer;

begin
xml := TChilkatXml.Create(Self).ControlInterface;

success := xml.LoadXmlFile('add_attribute.xml');
if (success <> 1) then
  begin
    Memo1.Lines.Add(xml.LastErrorText);
    Exit;
  end;

//  Add an attribute  a="123" to the root node:
xml.AddAttribute('a','123');

//  Navigate to the 1st child.  After calling FirstChild2,
//  "xml" now references the node with the tag "xyz".
xml.FirstChild2();
xml.AddAttribute('b','456');

//  Navigate to xyz's first child, which is the node having the
//  tag "mmm".
xml.FirstChild2();
xml.AddAttribute('c','789');
xml.AddAttribute('d','000');

//  Revert back to the XML document root node
xml.GetRoot2();

//  Examine the result:
Memo1.Lines.Add(xml.GetXml());
end;