.NET XML

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Xml;





public partial class CreateXml : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }





    /// <summary>

    /// 创建Xml

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnCreate_Click(object sender, EventArgs e)

    {

        XmlDataDocument XmlDoc = new XmlDataDocument();

        //创建Xml文档的说明信息

        XmlDeclaration XmlDec= XmlDoc.CreateXmlDeclaration("1.0", "gb2312", null);// 版本 编码  独立？

        XmlDoc.AppendChild(XmlDec);



        //创建根节点

        XmlElement XmlEle = XmlDoc.CreateElement("Book");

        XmlDoc.AppendChild(XmlEle);



        //创建新节点

        XmlElement BookOne = XmlDoc.CreateElement("BookOne");

        //创建新节点的子节点

        XmlElement BookName = XmlDoc.CreateElement("BookName");

        //子节点的值

        BookName.InnerText = "《like one》";

        //创建新节点的子节点

        XmlElement BookPrice = XmlDoc.CreateElement("BookPrice");

        //子节点的值

        BookPrice.InnerText = "10.00$";

        //将子节点附加给新节点

        BookOne.AppendChild(BookName);

        BookOne.AppendChild(BookPrice);

        XmlEle.AppendChild(BookOne);

        //将新节点附加个根节点

        XmlDoc.AppendChild(XmlEle);



        XmlElement BookOne2 = XmlDoc.CreateElement("BookOne");

        XmlElement BookName2 = XmlDoc.CreateElement("BookName");

        BookName2.InnerText = "《like two》";

        XmlElement BookPrice2 = XmlDoc.CreateElement("BookPrice");

        BookPrice2.InnerText = "10.00$";

        BookOne2.AppendChild(BookName2);

        BookOne2.AppendChild(BookPrice2);

        XmlEle.AppendChild(BookOne2);

        XmlDoc.AppendChild(XmlEle);



        XmlElement BookOne3 = XmlDoc.CreateElement("BookOne");

        //给BookOne3 设置属性

        BookOne3.SetAttribute("Attribute1","111");

        BookOne3.SetAttribute("Attribute2", "222");



        XmlElement BookName3 = XmlDoc.CreateElement("BookName"); 

        BookName3.InnerText = "《like three》";

        XmlElement BookPrice3 = XmlDoc.CreateElement("BookPrice");

        BookPrice3.InnerText = "10.00$";

        BookOne3.AppendChild(BookName3);

        BookOne3.AppendChild(BookPrice3);

        XmlEle.AppendChild(BookOne3);

        XmlDoc.AppendChild(XmlEle);



        XmlDoc.Save(Server.MapPath("~/")+"Test.xml");

    }



    /// <summary>

    /// 获取XML文档节点的值

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnFirst_Click(object sender, EventArgs e)

    {

        XmlDocument Xmldoc = new XmlDocument();

        Xmldoc.Load(Server.MapPath("~/Test.xml"));



        //首节点的值

        XmlNode  Node= Xmldoc.DocumentElement.FirstChild;

        

        if (Node != null)

        {

            string str = "";

            str += "This is " + Node.Name + " and childname is " + Node["BookName"].Name+Node["BookName"].InnerText + "<br/>";

            str += Node["BookPrice"].Name + " is " + Node["BookPrice"].InnerText + "<br/><br/><br/><br/>";

            Response.Write(str);

        }



        //末节点的值

        Node = Xmldoc.DocumentElement.LastChild;

        if (Node != null)

        {

            string str = "";

            str += "This is " + Node.Name + " and childname is " + Node["BookName"].Name + Node["BookName"].InnerText + "<br/>";// Node["BookName"].Name 就是BookName    Node["BookName"]即节点名字为BookName

            str += Node["BookPrice"].Name + " is " + Node["BookPrice"].InnerText + "<br/><br/><br/><br/>";

            Response.Write(str);

        }

        

    }





    /// <summary>

    /// 查看某一节点的值

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnSome_Click(object sender, EventArgs e)

    {

        XmlDocument Xmldoc = new XmlDocument();

        Xmldoc.Load(Server.MapPath("~/Test.xml"));

        //获取XML文档的节点列表

        XmlNodeList NodeList=Xmldoc.DocumentElement.ChildNodes;

        //节点列表的首个节点 索引以0开始

        XmlNode Node = NodeList.Item(0);

        if (Node != null)

        {

            string str = "";

            str += "This is " + Node.Name + " and childname is " + Node["BookName"].Name + Node["BookName"].InnerText + "<br/>";

            str += Node["BookPrice"].Name + " is " + Node["BookPrice"].InnerText + "<br/><br/><br/><br/>";

            Response.Write(str);

        }

    }





    /// <summary>

    /// Xml节点定位插入

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnInsert_Click(object sender, EventArgs e)

    {

        XmlDocument XmlDoc = new XmlDocument();

        XmlDoc.Load(Server.MapPath("~/Test.xml"));

        //寻找根节点

        XmlNode xmlnode = XmlDoc.SelectSingleNode("/Book");



        XmlElement BookOne = XmlDoc.CreateElement("BookOne");

        XmlElement BookName = XmlDoc.CreateElement("BookName");

        BookName.InnerText = "《like inert》";

        XmlElement BookPrice = XmlDoc.CreateElement("BookPrice");

        BookPrice.InnerText = "10.00$";

        BookOne.AppendChild(BookName);

        BookOne.AppendChild(BookPrice);



        //将新节点附加给根节点  使用XmlDoc.AppendChild 需将新节点先附加给根节点 再将根节点附加给文档 新节点也可以用XmlDoc.DocumentElement.AppendChild 直接附加给文档

        //xmlnode.AppendChild(BookOne);

        //XmlDoc.AppendChild(xmlnode);



        //在末尾添加子节点

        //XmlDoc.DocumentElement.AppendChild(BookOne);



        //在指定位置添加节点 InsertBefore

        //XmlDoc.DocumentElement.InsertBefore(BookOne,XmlDoc.DocumentElement.ChildNodes.Item(0));



        //在指定位置添加节点 InsertBefore

        XmlDoc.DocumentElement.InsertAfter(BookOne, XmlDoc.DocumentElement.ChildNodes.Item(0));

        XmlDoc.Save(Server.MapPath("~/") + "Test.xml");





    }



    /// <summary>

    /// 删除节点

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnDelete_Click(object sender, EventArgs e)

    {

        XmlDocument XmlDoc = new XmlDocument();

        XmlDoc.Load(Server.MapPath("~/Test.xml"));





        //寻找根节点

        XmlNode xmlnode = XmlDoc.SelectSingleNode("/Book");

        //删除根节点的第一个子节点

        //XmlNode Node = xmlnode.FirstChild;

        //if (Node != null)

        //{

        //    Node.ParentNode.RemoveChild(Node);

        //}



        //根据条件循环删除节点

        XmlNodeList NodeList = XmlDoc.DocumentElement.ChildNodes;

        for (int i = 0; i < NodeList.Count; i++)

        {

            if (NodeList[i].FirstChild.InnerText == "《like inert》")

            {

                NodeList[i].ParentNode.RemoveChild(NodeList[i]);

            }

        }



        XmlDoc.Save(Server.MapPath("~/") + "Test.xml");



    }





    /// <summary>

    /// 编辑节点

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnEdit_Click(object sender, EventArgs e)

    {

        XmlDocument XmlDoc = new XmlDocument();

        XmlDoc.Load(Server.MapPath("~/Test.xml"));





        //寻找根节点

        XmlNode xmlnode = XmlDoc.SelectSingleNode("/Book");

        //编辑根节点的第一个子节点

        XmlNode Node = xmlnode.FirstChild;

        if (Node != null)

        {

            Node.FirstChild.InnerText = "i am edited " + Node.FirstChild.InnerText;

            //指定第几个子节点

            Node.ChildNodes[1].InnerText = "i am edited " + Node.ChildNodes[1].InnerText;



            //Node.FirstChild.InnerText = Node.FirstChild.InnerText.Replace("i am edited ", "");

            //Node.ChildNodes[1].InnerText = Node.ChildNodes[1].InnerText.Replace("i am edited ", "");

        }



        //根据条件循环编辑节点

        XmlNodeList NodeList = XmlDoc.DocumentElement.ChildNodes;

        for (int i = 0; i < NodeList.Count; i++)

        {

            //根据条件修改

            //if (NodeList[i].FirstChild.InnerText == "《like inert》")

            //{

            //    NodeList[i].FirstChild.InnerText = "i am edited " + NodeList[i].FirstChild.InnerText;

            //}



            //NodeList[i].FirstChild.InnerText = "i am edited " + NodeList[i].FirstChild.InnerText;



            //循环修改信息

            NodeList[i].ChildNodes[0].InnerText = "i am edited " + NodeList[i].ChildNodes[0].InnerText;

            NodeList[i].ChildNodes[1].InnerText = "i am edited " + NodeList[i].ChildNodes[1].InnerText;

        }



        XmlDoc.Save(Server.MapPath("~/") + "Test.xml");

    }



 



    /// <summary>

    /// 查找

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnSearch_Click(object sender, EventArgs e)

    {

       

        XmlDocument xmlDoc = new XmlDocument();

        xmlDoc.Load(Server.MapPath("~/Test.xml"));

        XmlNodeList nodelist = xmlDoc.SelectNodes("Book/BookOne[BookName='" + this.tbSearch.Text.Trim() + "']");

        for (int i = 0; i < nodelist.Count; i++)

        {

            string str = "";

            str += nodelist[i].InnerText;

            Response.Write(str);

        }

        //Response.Write(nodelist.Count);

    }



    /// <summary>

    /// 模糊查找

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void Button1_Click(object sender, EventArgs e)

    {

        XmlDocument xmlDoc = new XmlDocument();

        xmlDoc.Load(Server.MapPath("~/Test.xml"));

        //xmlDoc.SelectNodes 搜索多个节点 xmlDoc.SelectSingleNode  搜索根节点

        XmlNodeList nodelist = xmlDoc.SelectNodes("Book/BookOne[contains(BookName,'" + this.tbSearch2.Text.Trim() + "')]");



        //for (int i = 0; i < nodelist.Count; i++)

        //{

        //    string str = "";

        //    str += nodelist[i].InnerText;

        //    Response.Write(str);

        //}

        Response.Write(nodelist.Count);

    }



    

    /// <summary>

    /// 获取节点属性信息

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    protected void btnAttra_Click(object sender, EventArgs e)

    {

        XmlDocument xmlDoc = new XmlDocument();

        xmlDoc.Load(Server.MapPath("~/Test.xml"));



        //文档节点列

        XmlNodeList nodelist = xmlDoc.DocumentElement.ChildNodes;

        for (int i = 0; i < nodelist.Count; i++)

        { 

            //其中一个节点的属性集合

            XmlAttributeCollection xmlattr=nodelist[i].Attributes;



            foreach(XmlAttribute xmla in xmlattr)

            {

                //判断该节点的属性名字和值

                if (xmla.Name == "Attribute1"&&xmla.Value=="111")

                {

                    Response.Write(nodelist[i].ChildNodes[0].InnerText);

                }



                if (xmla.Name == "Attribute2" && xmla.Value == "222")

                {

                    Response.Write(nodelist[i].ChildNodes[1].InnerText);

                }

            }

        }

    }

}





 



 



 



<div>

        <asp:Button ID="btnCreate" runat="server" Text="创建XML" 

            onclick="btnCreate_Click" />

            

        &nbsp;&nbsp;

            

        <asp:Button ID="btnFirst" runat="server" Text="查找Xml首节点值" 

            onclick="btnFirst_Click" />

        <br />

        <asp:Button ID="btnSome" runat="server" Text="查看某一节点的值" 

            onclick="btnSome_Click" />

        <br />

        <br />

        <asp:Button ID="btnInsert" runat="server" Text="Xml节点定位插入" 

            onclick="btnInsert_Click" />

            

        &nbsp;&nbsp;

            

        <asp:Button ID="btnDelete" runat="server" Text="删除某个节点" 

            onclick="btnDelete_Click" />

        <br />

        <br />

        <asp:Button ID="btnEdit" runat="server" Text="编辑节点" onclick="btnEdit_Click" />

        <br />

        <br />

        <asp:Button ID="btnAttra" runat="server" onclick="btnAttra_Click" Text="获取属性" />

        <br />

        <br />

        <asp:Button ID="btnSearch" runat="server" onclick="btnSearch_Click" Text="查找" />

        <br />

        <br />

        <asp:TextBox ID="tbSearch" runat="server"></asp:TextBox>

        <br />

        <br />

        <asp:Button ID="btnSearchs" runat="server" onclick="Button1_Click" Text="模糊查询" />

        <br />

        <br />

        <asp:TextBox ID="tbSearch2" runat="server"></asp:TextBox>

    </div>



 



Test.XML



<?xml version="1.0" encoding="gb2312"?>

<Book>

  <BookOne>

    <BookName>《like one》</BookName>

    <BookPrice>10.00$</BookPrice>

  </BookOne>

  <BookOne>

    <BookName>《like two》</BookName>

    <BookPrice>10.00$</BookPrice>

  </BookOne>

  <BookOne Attribute1="111" Attribute2="222">

    <BookName>《like three》</BookName>

    <BookPrice>10.00$</BookPrice>

  </BookOne>

</Book>