用C#遍历XML

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Xml;

namespace WindowsApplication3
{
    /// <summary>
    /// Form1 的摘要说明。
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button button1;
        private XmlDocument doc = new XmlDocument();
        private   XmlNode attrColl;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.HelpProvider helpProvider1;
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            //
            // Windows 窗体设计器支持所必需的
            //
            InitializeComponent();

            //
            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
            //
        }

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.helpProvider1 = new System.Windows.Forms.HelpProvider();
            this.SuspendLayout();
            //
            // button1
            //
            this.button1.Location = new System.Drawing.Point(184, 32);
            this.button1.Name = "button1";
            this.button1.TabIndex = 0;
            this.button1.Text = "button1";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            //
            // button2
            //
            this.helpProvider1.SetHelpNavigator(this.button2, System.Windows.Forms.HelpNavigator.Topic);
            this.helpProvider1.SetHelpString(this.button2, "pppppp");
            this.button2.Location = new System.Drawing.Point(176, 88);
            this.button2.Name = "button2";
            this.helpProvider1.SetShowHelp(this.button2, true);
            this.button2.TabIndex = 1;
            this.button2.Text = "button2";
            this.button2.MouseHover += new System.EventHandler(this.button2_MouseHover);
            this.button2.HelpRequested += new System.Windows.Forms.HelpEventHandler(this.button2_HelpRequested);
            //
            // Form1
            //
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(448, 285);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.button2,
                                                                          this.button1});
            this.HelpButton = true;
            this.helpProvider1.SetHelpNavigator(this, System.Windows.Forms.HelpNavigator.TableOfContents);
            this.helpProvider1.SetHelpString(this, "mmmmm");
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "Form1";
            this.helpProvider1.SetShowHelp(this, false);
            this.Text = "Form1";
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.Run(new Form1());
        }

        private void button1_Click(object sender, System.EventArgs e)
        {
//            XmlDocument doc = new XmlDocument();
            doc.Load("http://localhost/data.xml");      
            //Create an attribute collection.

//            XmlNode attrColl = doc.DocumentElement.SelectSingleNode("//book");
            attrColl = doc.DocumentElement.SelectSingleNode("//book/*");
            this.SelectedNodes(attrColl);

            Console.WriteLine("Display all the attributes in the collection... ");
            
        }
        private XmlNode SelectedNodes( XmlNode attrColl)
        {
            XmlNode childNode;
            XmlNode brotherNode;
            bool pd;
            
            
            try
            {

                if(    attrColl.HasChildNodes ==true)
                {
                    childNode = SelectedNodes(attrColl.FirstChild);
                    return (childNode);
                }
                else
                {
                
                    MessageBox.Show(attrColl.Name);    
                    if(    attrColl.NextSibling != null)
                    {
                
                        attrColl = attrColl.NextSibling;
                
                    }
                    else
                    {    
                        
                        while(attrColl.NextSibling == null)
                        {
                            MessageBox.Show(attrColl.ParentNode.Name.ToString());
                            attrColl = attrColl.ParentNode;

                        }
                        attrColl = attrColl.NextSibling;
                        //                    MessageBox.Show("PPP");
                
                    }
        
                    return ( SelectedNodes(    attrColl));
                            
                }
            }
            catch
            {
            }
                return attrColl;
            }

        private void button2_MouseHover(object sender, System.EventArgs e)
        {
//            this.button2.he
            
        }

        private void button2_HelpRequested(object sender, System.Windows.Forms.HelpEventArgs hlpevent)
        {
//              MessageBox.Show("www");
        }
        
    
    
    }//end the class
}//end the namespace

原文转自：http://www.ltesting.net