.net编程

开发平台：
Visual C++

CppDom.cpp：源码内容
							// This is the main project file for VC++ application project 
// generated using an Application Wizard.
#include "stdafx.h"
#using <mscorlib.dll>
#using <System.xml.dll>
using namespace System;
using namespace System::Xml;
using namespace System::Collections;
__gc class XmlBuilder
{
private:
    XmlNode* root;
    XmlDocument* doc;
    XmlNodeList* xnl;
public:
    XmlBuilder(String* path)
    {
        // Create the XmlDocument
        doc = new XmlDocument();
        // Load the data
        doc->Load(path);
        Console::WriteLine("Document loaded");
        // Get the root of the tree
        root = doc->DocumentElement;
        // get the child node list
        xnl = doc->ChildNodes;
        IEnumerator* ie = xnl->GetEnumerator();
        while (ie->MoveNext() == true)
            Console::WriteLine("Child: {0}",
                               (dynamic_cast<XmlNode*>(ie->Current))->Name);
    }
    void processChildNodes()
    {
        // Declare an enumerator
        IEnumerator* ie = xnl->GetEnumerator();
        while (ie->MoveNext() == true)
        {
            // Get a pointer to the node
            XmlNode* pNode = dynamic_cast<XmlNode*>(ie->Current);
            // See if it is the root
            if (pNode->NodeType == XmlNodeType::Element && 
                                pNode->Name->Equals(S"geology"))
            {
                Console::WriteLine("  Found the root");
                processRoot(pNode);
            }
        }
    }
    void processRoot(XmlNode* rootNode)
    {
        XmlNode* pVolc = dynamic_cast<XmlNode*>(rootNode->ChildNodes->Item(1));
        // Create a new volcano element
        XmlElement* newVolcano = createNewVolcano();
        // Link it in
        root->InsertBefore(newVolcano, pVolc);
    }
    XmlElement* createNewVolcano()
    {
        // Create a new element
        XmlElement* newElement = doc->CreateElement("volcano");
        // Set the name attribute
        XmlAttribute* pAtt = doc->CreateAttribute("name");
        pAtt->Value = S"Mount St.Helens";
        newElement->Attributes->Append(pAtt);
        // Create the location element
        XmlElement* locElement = doc->CreateElement("location");
        XmlText* xt = doc->CreateTextNode(S"Washington State, USA");
        locElement->AppendChild(xt);
        newElement->AppendChild(locElement);
        return newElement;
    }
    void printTree()
    {
        XmlTextWriter* xtw = new XmlTextWriter(Console::Out);
        xtw->Formatting = Formatting::Indented;
        doc->WriteTo(xtw);
        xtw->Flush();
        Console::WriteLine();
    }
};
// This is the entry point for this application
#ifdef _UNICODE
int wmain(void)
#else
int main(int argc, char* argv[])
#endif
{
    // Check for required arguments
    if (argc < 2)
    {
        Console::WriteLine(S"Usage: CppWriter path");
        return -1;
    }
    String* path = new String(argv[1]);
    try
    {
        XmlBuilder* pf = new XmlBuilder(path);
        pf->processChildNodes();
        pf->printTree();
    }
    catch(Exception* pe)
    {
        Console::WriteLine(pe->Message);
    }
    return 0;
}

						