using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml;

namespace XML_Test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Yahoo’mŒb‘Ü
            string XMLHTML = textBox1.Text;
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.LoadXml(XMLHTML);
            XmlNamespaceManager NsManager = new XmlNamespaceManager(xmlDocument.NameTable);
            NsManager.AddNamespace("xsi", "urn:yahoo:jp:chiebukuro");
            XmlNodeList nodeList = xmlDocument.SelectNodes("/xsi:ResultSet/xsi:Result/xsi:Question", NsManager);
            for (int i = 0; i < nodeList.Count; i++)
            {
                if (nodeList[i].HasChildNodes == true)
                {
                    for (int j = 0; j < nodeList[i].ChildNodes.Count; j++)
                    {
                        if (nodeList[i].ChildNodes[j].LocalName == "Url")
                        {
                            textBox2.Text += "URL:" + nodeList[i].ChildNodes[j].InnerText + "\r\n";
                        }
                        if (nodeList[i].ChildNodes[j].LocalName == "Content")
                        {
                            textBox2.Text += "Content:" + nodeList[i].ChildNodes[j].InnerText + "\r\n";
                        }
                    }
                    textBox2.Text += "\r\n";
                }
            }
        }
    }
}