C++ builder 中的 XMLDocument 类详解(16) – 前一个节点、后一个节点和父节点

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

#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include <msxmldom.hpp>
#include <XMLDoc.hpp>
#include <xmldom.hpp>
#include <XMLIntf.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:	// IDE-managed Components
    TXMLDocument *XMLDocument1;
    TButton *Button1;
    void __fastcall FormCreate(TObject *Sender);
    void __fastcall Button1Click(TObject *Sender);
private:	// User declarations
public:		// User declarations
    __fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif

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

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::FormCreate(TObject *Sender)
{
    XMLDocument1->LoadFromFile("D:\\code\\B_C_B\\XMLDocument\\test.xml");
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
//    _di_IXMLNodeList nodeList;
    _di_IXMLNode node,nodeX;

    node=XMLDocument1->DocumentElement;
    node=node->ChildNodes->Nodes[1];
    node=node->ChildNodes->Nodes[1];
 //   现在node结点指向了我们的例子中第二个人员"李四"

    ShowMessage(node->NodeValue);//女

    //获取该节点的上一个节点，它上一个结点应该是李四的姓名
    nodeX=node->PreviousSibling();
    ShowMessage(nodeX->NodeValue);

    //get the next node,maybe is LISI'age
    nodeX=node->NextSibling();
    ShowMessage(nodeX->NodeValue);//43

    //get this node'parent node
    nodeX=node->ParentNode;
    ShowMessage(nodeX->NodeName);//ren yuan
}
//---------------------------------------------------------------------------