1.建立XML檔案
var Doc: TNativeXml;//宣告上下文物件
var filepath:string;//檔案路徑
DOC:=TNativeXml.CreateName('root');
Doc.EncodingString:='gb2312';
DOC.XmlFormat:=xfReadable;
DOC.SaveToFile(filepath);

2.建立新節點
//先在根節點下建立一個節點名為userInfo的節點，然後給該節點寫一個屬性為loginname，屬性值為ceshiyong
DOC.Root.NodeNew('userInfo').WriteAttributeString('loginname','ceshiyong');

3.更新節點
with Doc.Root.NodeByName('sysconfig').NodeByName('netconfig').NodeByName('webserviceconfig') do
    begin
        WriteString('serverurl',model.serverurl);
        WriteString('serverport',model.serverport);
    end;
DOC.SaveToFile(filepath);

4.在父節點下建立子節點
//在根節點下查詢屬性loginname='ceshiyong'節點，並在該節點下建立節點名為baseinfo節點   
with Doc.Root.NodeByAttributeValue('userInfo','loginname','ceshiyong').NodeNew('baseinfo') do
    begin
        WriteString('id','');
        WriteString('name','');
        WriteString('loginname','');
        WriteString('shenfen','');
        WriteString('nickname','');
        WriteString('email','');
        WriteString('qq','');
        WriteString('mobile','');
        WriteString('officephone','');
        WriteString('HomePhone','');
        WriteString('Address','');
        WriteString('birthday','');
        WriteString('sex','');
    end;

5.節點查詢（查詢多個節點）
var AList: TXmlNodeList;
ALIST:=TXmlNodeList.Create;
Doc.Root.FindNodes('userInfo',AList);