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

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

        private void menuItem1_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        XmlTextReader reader = null;
        StreamWriter writer = null;

        private void menuItem3_Click(object sender, EventArgs e)
        {
            writer = new StreamWriter(@"\Storage Card\output.txt", false);
            try
            {
                int timeSpan1;
              //  int timeSpan2;
               int t1 = System.Environment.TickCount;
                reader = new XmlTextReader(@"\Storage Card\books.xml");

                while (reader.Read())
                {
                    //XmlNodeType這個枚舉讓我們方便的對不同類型的節點進行相應的操作
                    switch (reader.NodeType)
                    {
                        case XmlNodeType.XmlDeclaration:
                            FormatOutput(writer, reader, "XmlDeclaration");
                            break;
                        case XmlNodeType.ProcessingInstruction:
                            FormatOutput(writer, reader, "ProcessingInstruction");
                            break;
                        case XmlNodeType.DocumentType:
                            FormatOutput(writer, reader, "DocumentType");
                            break;
                        case XmlNodeType.Comment:
                            FormatOutput(writer, reader, "Comment");
                            break;
                        case XmlNodeType.Element:
                            FormatOutput(writer, reader, "Element");
                            break;
                        case XmlNodeType.Text:
                            FormatOutput(writer, reader, "Text");
                            break;
                        case XmlNodeType.Whitespace:
                            break;
                    }
                }
                int t2 = System.Environment.TickCount;
                timeSpan1 = t2-t1;
                MessageBox.Show("Complete,timeSpan="+timeSpan1+" ms");
            }
            catch (XmlException xmlEx)
            {
                writer.WriteLine(xmlEx.Message);
            }
            finally
            {
                reader.Close();
                writer.Close();
            }
        }


        private static void FormatOutput(StreamWriter writer, XmlReader reader, String nodeType)
        {
            //用tab使輸出的層次分明一點
            for (int i = 0; i < reader.Depth; i++)
            {
                writer.Write('\t');
            }

            //這里并沒有做過多的判斷，但是作為Element的節點并沒有Value
            if (reader.Name != String.Empty)
                writer.WriteLine(reader.Prefix + nodeType + "<" + reader.Name + ">:" + reader.Value);
            else
                writer.WriteLine(reader.Prefix + nodeType + ": " + reader.Value);

            // 顯示當前節點的屬性名和值,同樣用tab做了格式控制
            while (reader.MoveToNextAttribute())
            {
                for (int i = 0; i < reader.Depth; i++)
                    writer.Write('\t');
                writer.WriteLine("Attribute: " + reader.Name + "= " + reader.Value);
            }
        }

        private void menuItem4_Click(object sender, EventArgs e)
        {
            Form2 f2 = new Form2();
            f2.Show();
        }

/*
        /// <summary>
        /// 根據特定的XPath表達式查詢節點信息
        /// </summary>
        /// <param name="xpath"></param>
        private void SpecificQuery(string xpath)
        {
            XmlDocument doc = new XmlDocument();
            doc.Load(@"\Storage Card\books.xml");
            XmlNodeList nodeList;
            XmlNode root = doc.DocumentElement;           
            nodeList = root.SelectNodes("/BookStore/Book[author/last-name='Sheldon']");
            foreach (XmlNode book in nodeList)
            {
                Console.WriteLine(book.Name+":"+book.Value);
            }
        }
       */ 
    }
}