Pascal (Lazarus/Delphi)

Demonstrate the XML UpdateAttrAt Method

See more XML Examples

Demonstrates the XML UpdateAttrAt method to update attribute name/value pairs in XML.

Note: This example requires Chilkat v9.5.0.64 or later.

Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Xml;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  xml: TXml;
  autoCreate: Boolean;

begin
  //  Note: This example requires Chilkat v9.5.0.64 or later.
  xml := TXml.Create;

  xml.Tag := 'animals';

  autoCreate := True;

  //  When the autoCreate argument equals True, the UpdateAttrAt
  //  method auto-creates the children as needed:
  xml.UpdateAttrAt('penguin',autoCreate,'feature','flightless bird');
  xml.UpdateAttrAt('mammal|rodent|squirrel',autoCreate,'feature','bushy tail');
  xml.UpdateAttrAt('mammal|rodent|rat',autoCreate,'feature','long hairless tail');

  //  Show the XML
  WriteLn(xml.GetXml());

  //  	<?xml version="1.0" encoding="utf-8" ?>
  //  	<animals>
  //  	    <penguin feature="flightless bird" />
  //  	    <mammal>
  //  	        <rodent>
  //  	            <squirrel feature="bushy tail" />
  //  	            <rat feature="long hairless tail" />
  //  	        </rodent>
  //  	    </mammal>
  //  	</animals>
  //  

  //  Now update each node's "feature" attribute..
  xml.UpdateAttrAt('penguin',autoCreate,'feature','black and white');
  xml.UpdateAttrAt('mammal|rodent|squirrel',autoCreate,'feature','grey, red, or black');
  xml.UpdateAttrAt('mammal|rodent|rat',autoCreate,'feature','brown, grey, white, or black');

  WriteLn(xml.GetXml());

  //  	<?xml version="1.0" encoding="utf-8" ?>
  //  	<animals>
  //  	    <penguin feature="black and white" />
  //  	    <mammal>
  //  	        <rodent>
  //  	            <squirrel feature="grey, red, or black" />
  //  	            <rat feature="brown, grey, white, or black" />
  //  	        </rodent>
  //  	    </mammal>
  //  	</animals>
  //  


  xml.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.