操作XMLC#（转）

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Data;

namespace operate_xml
{
    class operate_xml1
    {
        public XmlDocument myXmlDocument;

        /// <summary>
        /// 带参构造函数
        /// </summary>
        /// <param name="xml_name">Xml的路径</param>
        public operate_xml1(string xml_name)
        {
            myXmlDocument = new XmlDocument();
            myXmlDocument.Load(xml_name);
        }
        /// <summary>
        /// 更新节点
        /// </summary>
        /// <param name="xml_name"></param>
        /// <param name="name"></param>
        /// <param name="value"></param>
        /// <param name="weapon"></param>
        /// <returns></returns>
        public bool updata_xml(string xml_name,string name,string value,string weapon)
        {
            bool isSuccess = false;
            XmlNode node;           
           
            node = myXmlDocument.DocumentElement; //获取XML文档的根
            try
            {
                foreach (XmlNode node1 in node.ChildNodes)
                    foreach (XmlNode node2 in node1.ChildNodes)
                    {
                        if (node2.InnerText == name)
                        {
                            node2.NextSibling.InnerText = value;        //获取下一个节点
                            node2.NextSibling.NextSibling.InnerText = weapon;   //获取下一个节点
                            isSuccess = true;                       
                        }
                    }
                myXmlDocument.Save(xml_name);
               
            }
            catch (Exception ex)
            {               
            }
            return isSuccess;
        }
        /// <summary>
        /// 添加节点
        /// </summary>
        /// <param name="xml_name"></param>
        /// <param name="name"></param>
        /// <param name="power"></param>
        /// <param name="weapon"></param>
        /// <returns></returns>
        public bool CreatNode(string xml_name,string name,string power,string weapon)
        {
            bool isSuccess = false;
            XmlNode node;
            node = myXmlDocument.DocumentElement;
            try
            {
                XmlElement subElement = myXmlDocument.createElement_x("body");
               

                XmlElement subElement1 = myXmlDocument.createElement_x("name");
                subElement1.InnerText = name;
                XmlElement subElement2 = myXmlDocument.createElement_x("power");
                subElement2.InnerText = power;
                XmlElement subElement3 = myXmlDocument.createElement_x("weapon");
                subElement3.InnerText = weapon;

                subElement.AppendChild(subElement1);
                subElement.AppendChild(subElement2);
                subElement.AppendChild(subElement3);

                node.AppendChild(subElement);
                myXmlDocument.Save(xml_name);

                isSuccess = true;
            }
            catch (Exception ex)
            { }
            return isSuccess;
        }
        /// <summary>
        /// 删除节点，第一种方法
        /// </summary>
        /// <param name="xml_name"></param>
        /// <param name="name"></param>
        /// <returns></returns>
        public bool DeleteNode(string xml_name, string name)
        {
            bool isSuccess = false;
            XmlNode node;
            node = myXmlDocument.DocumentElement;
            try
            {
                foreach (XmlNode node1 in node.ChildNodes)
                    foreach (XmlNode node2 in node1.ChildNodes)
                        if (node2.InnerText == name)
                            node2.ParentNode.RemoveAll();
                myXmlDocument.Save(xml_name);   //记得要保存
                isSuccess = true;
            }
            catch (Exception ex)
            { }
            return isSuccess;
        }
        /// <summary>
        /// 删除节点，第二种方法
        /// </summary>
        /// <param name="xml_name"></param>
        /// <param name="name"></param>
        /// <returns></returns>
        public bool DeleteNode1(string xml_name, string name)
        {
            bool isSuccess = false;
            XmlNode node1;
            XmlNodeList nodelist = myXmlDocument.SelectNodes("histroy/body/name");   //选择所有匹配name的节点
            foreach (XmlNode node in nodelist)
            {              
                    if (node.InnerText == name)
                    {
                        node1 = node.ParentNode;
                        node1.ParentNode.RemoveChild(node1);
                        isSuccess = true;
                    }               
            }
            myXmlDocument.Save(xml_name);
            return isSuccess;
        }
        /// <summary>
        /// 查询人物
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public XmlNode getxmlnode(string name)
        {
            XmlNode xmlNode=null;           
            XmlNodeList nodelist = myXmlDocument.SelectNodes("//histroy//body//name");   //选择所有匹配name的节点
            foreach (XmlNode node in nodelist)
            {
                if (node.InnerText == name)
                {
                    xmlNode = node.ParentNode;                   
                }
            }
            return xmlNode;
        }
        /// <summary>
        /// 使用dataset显示整个XML文件
        /// </summary>
        /// <returns></returns>
        public DataSet GetDs()
        {
            DataSet ds = new DataSet();
            try
            {
                System.IO.StringReader read = new System.IO.StringReader(myXmlDocument.SelectSingleNode("//histroy").OuterXml);
                ds.ReadXml(read);
                read.Close();
            }
            catch
            { }
            return ds;
        }

   }

}

原文：http://blog.sina.com.cn/s/blog_66e765d90100j0az.html