asp.net XMLDocument获取第一个节点与删除root节点方法

xml技术来存储数据和文档是一件很容易的事情，.net framework 在它的命名空间system.xml 就提供了一种可以很方便的操作xml的类xmldocument，它使用起来非常容易，xmldocument 其实就是一个简单的树,下面我们就来看看关于 xmldocument获取第一个节点与删除root节点方法

#include "stdafx.h"

using namespace system;
using namespace system::xml;

void navigate(xmlnode ^node, int depth)
{
    if (node == nullptr)
        return;

    console::writeline(depth);
    console::writeline(node->nodetype.tostring());
    console::writeline(node->name);
    console::writeline(node->value);

    if (node->attributes != nullptr)
    {
        for (int i = 0; i < node->attributes->count; i++)
        {
            console::writeline(depth+1);
            console::writeline(node->attributes[i]->name);
            console::writeline(node->attributes[i]->value);
        }
    }
    navigate(node->firstchild, depth+1);
    navigate(node->nextsibling, depth);
}

void main()
{
    xmldocument ^doc = gcnew xmldocument();
    try
    {
        xmlreader ^reader = xmlreader::create("..monsters.xml");
        doc->load(reader);
        reader->close();
        xmlnode ^node = doc->firstchild;

       
        navigate(node, 0);
    }
    catch (exception ^e)
    {
        console::writeline("error occurred: {0}", e->message);
    }
}

删除root节点

#include "stdafx.h"

using namespace system;
using namespace system::xml;
using namespace system::xml::xpath;

void navigate(xpathnavigator ^nav, int depth)
{
    console::writeline(depth);
    console::writeline(nav->nodetype.tostring());
    console::writeline(nav->name);
    console::writeline(nav->value);

    if (nav->hasattributes)
    {
        nav->movetofirstattribute();
        do {
            console::writeline(nav->name);
            console::writeline(nav->value);
        }
        while(nav->movetonextattribute());
        nav->movetoparent();
    }

    if (nav->movetofirstchild())
    {
        navigate(nav, depth+1);
        nav->movetoparent();
    }
    if (nav->movetonext())
        navigate(nav, depth);
}

void main()
{
    xmldocument ^doc = gcnew xmldocument();
    try
    {
        doc->load("..monsters.xml");
        xpathnavigator ^nav = doc->createnavigator();
        nav->movetoroot();
        navigate(nav, 0);
    }
    catch (exception ^e)
    {
        console::writeline("error occurred: {0}", e->message);
    }
}