c++ builder 中的 XMLDocument 类详解(5) - 获取元素内容

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#ifndef Unit1H

#define Unit1H

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#include <Classes.hpp>

#include <Controls.hpp>

#include <StdCtrls.hpp>

#include <Forms.hpp>

#include <msxmldom.hpp>

#include <XMLDoc.hpp>

#include <xmldom.hpp>

#include <XMLIntf.hpp>

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class TForm1 : public TForm

{

__published:	// IDE-managed Components

    TButton *btn_1;

    TButton *btn_2;

    TButton *btn_3;

    TButton *btn_4;

    TXMLDocument *XMLDocument1;

    TMemo *Memo1;

    void __fastcall FormCreate(TObject *Sender);

    void __fastcall btn_1Click(TObject *Sender);

    void __fastcall btn_2Click(TObject *Sender);

    void __fastcall btn_3Click(TObject *Sender);

    void __fastcall btn_4Click(TObject *Sender);

private:	// User declarations

public:		// User declarations

    __fastcall TForm1(TComponent* Owner);

};

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extern PACKAGE TForm1 *Form1;

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#endif

 

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#include <vcl.h>

#pragma hdrstop



#include "Unit1.h"

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#pragma package(smart_init)

#pragma resource "*.dfm"

TForm1 *Form1;

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__fastcall TForm1::TForm1(TComponent* Owner)

    : TForm(Owner)

{

}

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void __fastcall TForm1::FormCreate(TObject *Sender)

{

    XMLDocument1->LoadFromFile("D:\\code\\B_C_B\\XMLDocument\\test.xml");

    Memo1->Lines=XMLDocument1->XML;

}

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void __fastcall TForm1::btn_1Click(TObject *Sender)

{

    //访问第一个人的信息



    ShowMessage(XMLDocument1->DocumentElement->ChildNodes->Nodes[0]->ChildNodes->FindNode("姓名")->Text);// 张三

    ShowMessage(XMLDocument1->DocumentElement->ChildNodes->Nodes[0]->ChildNodes->FindNode("性别")->Text);// 男

    ShowMessage(XMLDocument1->DocumentElement->ChildNodes->Nodes[0]->ChildNodes->FindNode("年龄")->Text);// 34

    //可以通过位置访问子节点，如:ChildNodes->Nodes[0] 表示子节点列表中的第一个元素

    // 可以通过子节点名访问子节点, 如: ChildNodes->['姓名']

    //但在节点名一样的情况下, 只能通过位置访问}

    //任何情况下都可以通过位置访问, 譬如:

    //ShowMessage(XMLDocument1->DocumentElement->ChildNodes->Nodes[0]->ChildNodes->nodes[0]->Text);// 张三







}

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void __fastcall TForm1::btn_2Click(TObject *Sender)

{

    //访问第二个人的信息



    _di_IXMLNodeList nodeList;



    nodeList=XMLDocument1->DocumentElement->ChildNodes;



    _di_IXMLNode node=nodeList->Nodes[1];



    ShowMessage(node->ChildNodes->FindNode("姓名")->Text);

    ShowMessage(node->ChildNodes->FindNode("性别")->Text);

    ShowMessage(node->ChildNodes->FindNode("年龄")->Text);

}

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void __fastcall TForm1::btn_3Click(TObject *Sender)

{

    //获得所有成员



    _di_IXMLNodeList nodeList;

    _di_IXMLNode node;



    nodeList=XMLDocument1->DocumentElement->ChildNodes;

    for(int i=0;i<nodeList->Count-1;i++)//这里一定是nodelist->count-1

    {

        node=nodeList->Nodes[i];

        ShowMessage(node->ChildNodes->FindNode("姓名")->Text);//分别显示姓名

    }



}

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void __fastcall TForm1::btn_4Click(TObject *Sender)

{

    //获取所有成员年龄

    _di_IXMLNodeList nodeList;

    _di_IXMLNode node;



    nodeList=XMLDocument1->DocumentElement->ChildNodes;

    for(int i=0;i<nodeList->Count-1;i++)//这里一定是nodelist->count-1

    {

        node=nodeList->Nodes[i];

        ShowMessage(node->ChildNodes->FindNode("年龄")->Text);//分别显示年龄

    }



}

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