Delphi 中的 XMLDocument 类详解(8) - 添加与删除节点

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, xmldom, XMLIntf, msxmldom, XMLDoc, StdCtrls;



type

  TForm1 = class(TForm)

    XMLDocument1: TXMLDocument;

    Memo1: TMemo;

    Button1: TButton;

    Button2: TButton;

    procedure FormCreate(Sender: TObject);

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

  private

    { Private declarations }

  public

    { Public declarations }

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



//打开

procedure TForm1.FormCreate(Sender: TObject);

begin

  XMLDocument1.LoadFromFile('c:\temp\test.xml');

  {必须用万一提供的 xml 测试文件, 才能有相同的返回值}

end;





//添加

procedure TForm1.Button1Click(Sender: TObject);

var

  newNode, newNodeAdd: IXMLNode;

begin

  newNode := XMLDocument1.DocumentElement.AddChild('人员');

  newNode.Attributes['职务'] := '秘书';



  newNodeAdd := newNode.AddChild('姓名');

  newNodeAdd.Text := '小翠';



  newNodeAdd := newNode.AddChild('性别');

  newNodeAdd.Text := '女';



  Memo1.Lines := XMLDocument1.XML; {查看}

  {会在尾部增加:

  	<人员 职务="秘书"><姓名>小翠</姓名><性别>女</性别></人员>

  }

end;





//删除

procedure TForm1.Button2Click(Sender: TObject);

var

  nodeList: IXMLNodeList;

begin

  nodeList := XMLDocument1.DocumentElement.ChildNodes;

  nodeList.Delete(nodeList.Count-1); {删除最后一条}



  Memo1.Lines := XMLDocument1.XML; {查看}

end;



end.