生成Xml树

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Xml.Linq;

namespace LinktoXml.Class
{
    /*
     *           Linq to Xml Tree Structure
     *    XAttribute   :该类表示一个XML节点的属性
     *    XElement     :表示一个Xml 元素，常用格式为<element>....</element> 
         <BookList>
          <book name="english" type="education">         <!--name: XAttribute -->
            <author>zhangweia</author>  <!-- XElement-->
            <price>20</price>
          </book>
          <book name="math" type="education">
            <author>zhangweib</author>
            <price>30</price>
          </book>
        </BookList>
     */

    public class CreateXmlTree
    {
        #region XElement 

        /*
        public class CreateXElementWays
        {
            /// <summary>
            /// create a node
            /// </summary>
            /// <param name="name">node label name</param>
            private void  XElement(XName name);

            /// <summary>
            /// create a node
            /// </summary>
            /// <param name="element"></param>
             public void XElement(XElement element);

            /// <summary>
            /// 
            /// </summary>
            /// <param name="name"></param>
            /// <param name="content"></param>
            public void XElement(XName name,object content);
          
            //param is object list
            public void XElement(XName name,params object[] content);
        }
        */
        public void CreateElement()
        {
            XElement root = new XElement("BookList");   // <BookList></BookList>

            XElement bookE = new XElement("book");      // <book></book>

            XElement authorE = new XElement("author", "zhangweia"); //<author>zhangweia</author>  object is String

            XElement priceE = new XElement("price", "20");          //<price>20</price>

            /*
            <book name="english">        
                <author>zhangweia</author> 
                <price>20</price>
            </book>
             */
            XElement firstNode = new XElement("book",              //对象为多个子节点
                                                        authorE,
                                                        priceE
                                                        );

            XElement secondNode = new XElement("book",           // XElement(XName name,params object[] content); object is XElement
                                                    new XElement("author", "zhangweib"),
                                                    new XElement("price", "30")
                                                    );

            XElement XmlTree = new XElement("BookList",
                                                firstNode,
                                                secondNode);
            MessageBox.Show(XmlTree.ToString());

        }
       
        #endregion

        #region XAttribute
        /*
        public class CreateAttribute
        {
            public void XAttribute(XName name, object value);

            public void XAttribute(XAttribute otehr);
        }
        */
       // <book name="english" type="education"/>
        public void CreateAttributeNode()
        {            
            XAttribute nameA = new XAttribute("name","english");

            XAttribute typeA = new XAttribute("type", "education");

            //<book name="english" type="education"/>
            XElement bookE = new XElement("book",   //XElement(XName name,params object[] content); object is XAttribute
                                            nameA,
                                            typeA);
            MessageBox.Show(bookE.ToString());
        }

        public void CreateXmlByAttributeAndElement()
        {
            XElement root = new XElement("BookList",
                                        new XElement("book",
                                            new XAttribute("name","english"),
                                            new XAttribute("type","education"),
                                            new XElement("author","zhangweia"),
                                            new XElement("price","20")),
                                        new XElement("book",
                                            new XAttribute("name","math"),
                                            new XAttribute("type","education"),
                                            new XElement("author","zhangweib"),
                                            new XElement("price","30")));
            MessageBox.Show(root.ToString());
        }
        #endregion

    }
}

CreateElement 方法生成的XML如图：

CreateAttributeNode 方法生成的XML如图：

CreateXmlByAttributeAndElement 方法生成的XML如图：