<转载>XML操作

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Web;
using System.Xml.Linq;

namespace XMLOperation
{
    class Program
    {
        static void Main(string[] args)
        {
            /*=============Linq 读写XML==================*/
            string wxmlPath = @"F:\XmlTest\test.xml";
            XmlWriteReadLinqOperation writeReadLinq = new XmlWriteReadLinqOperation();
            // writeReadLinq.WriteXml(wxmlPath);
            writeReadLinq.CreatXmlTree(wxmlPath);

            //string xmlPath = @"F:\XML.xml";
            string xmlPath = @"C:\Users\zery.zhang\Desktop\ProjectDemo\XML.xml";
            /*
             * 1 三者之间的关系用图画出
             * 2 XMLElement 主要是针对节点的一些属性进行操作
             * 3 XMLDocument 主要是针对节点的CUID操作
             * 4 XMLNode 为抽象类，做为以上两类的基类，提供一些操作节点的方法
             */

            //===========C# to Xml==========//
            XmlOperation xmlOperation = new XmlOperation();
            //xmlOperation.Create(xmlPath);
            //xmlOperation.CreateAttribute(xmlPath);

            //xmlOperation.Delete(xmlPath);
            //xmlOperation.DeleteAttribute(xmlPath);

            //xmlOperation.Modify(xmlPath);
            //xmlOperation.ModifyAttribute(xmlPath);

            //xmlOperation.Select(xmlPath);
            //xmlOperation.SelectAttribute(xmlPath);
            /*=============Linq to Xml===========*/
            XmlOperationToLinq xOperation = new XmlOperationToLinq();
            // xOperation.Create(xmlPath);
            /*
             *1 给指定的XML节点的所有子节点增加一个节点，并增加属性
             *2 删除指定节点的子节点的指定属性
             *3
             */
            string lxmlPath = @"F:\XmlTest\test.xml";
            xOperation.Create(lxmlPath);
            xOperation.CreateAttribute(lxmlPath);
            //xperation.Delete(lxmlPath);
            //xOperation.DeleteAttribute(lxmlPath);
           // xOperation.ModifyAttribute(lxmlPath);

            /*=============C# 读写XML===============*/
            XmlWriteReadOperation writeRead = new XmlWriteReadOperation();

            Console.Read();

        }

    }

    class XmlOperation
    {

        public void Create(string xmlPath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            var root = xmlDoc.DocumentElement;//取到根结点

            XmlNode newNode = xmlDoc.CreateNode("element", "Name", "");
            newNode.InnerText = "Zery";

            //添加为根元素的第一层子结点
            root.AppendChild(newNode);
            xmlDoc.Save(xmlPath);
        }
        //属性
        public void CreateAttribute(string xmlPath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            XmlElement node = (XmlElement)xmlDoc.SelectSingleNode("Collection/Book");
            node.SetAttribute("Name", "C#");
            xmlDoc.Save(xmlPath);
        }

        public void Delete(string xmlPath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            var root = xmlDoc.DocumentElement;//取到根结点

            var element = xmlDoc.SelectSingleNode("Collection/Name");
            root.RemoveChild(element);
            xmlDoc.Save(xmlPath);
        }

        public void DeleteAttribute(string xmlPath)
        {

            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            XmlElement node = (XmlElement)xmlDoc.SelectSingleNode("Collection/Book");
            //移除指定属性
            node.RemoveAttribute("Name");
            //移除当前节点所有属性，不包括默认属性
            node.RemoveAllAttributes();

            xmlDoc.Save(xmlPath);

        }

        public void Modify(string xmlPath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            var root = xmlDoc.DocumentElement;//取到根结点
            XmlNodeList nodeList = xmlDoc.SelectNodes("/Collection/Book");
            //xml不能直接更改结点名称，只能复制然后替换，再删除原来的结点
            foreach (XmlNode node in nodeList)
            {
                var xmlNode = (XmlElement)node;
                xmlNode.SetAttribute("ISBN", "Zery");
            }
            xmlDoc.Save(xmlPath);

        }

        public void ModifyAttribute(string xmlPath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            XmlElement element = (XmlElement)xmlDoc.SelectSingleNode("Collection/Book");
            element.SetAttribute("Name", "Zhang");
            xmlDoc.Save(xmlPath);

        }

        public void Select(string xmlPath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            //取根结点
            var root = xmlDoc.DocumentElement;//取到根结点
            //取指定的单个结点
            XmlNode singleNode = xmlDoc.SelectSingleNode("Collection/Book");

            //取指定的结点的集合
            XmlNodeList nodes = xmlDoc.SelectNodes("Collection/Book");

            //取到所有的xml结点
            XmlNodeList nodelist = xmlDoc.GetElementsByTagName("*");
        }

        public void SelectAttribute(string xmlPath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            XmlElement element = (XmlElement)xmlDoc.SelectSingleNode("Collection/Book");
            string name = element.GetAttribute("Name");

        }
    }

    class XmlOperationToLinq
    {
        //其它操作
        public void OtherOperaton()
        {
            //加文件头
        }

        public void Create(string xmlPath)
        {
            XDocument xDoc = XDocument.Load(xmlPath);
            XElement xElement = xDoc.Element("BookStore");
            xElement.Add(new XElement("Test", new XAttribute("Name", "Zery")));
            xDoc.Save(xmlPath);
        }

        public void CreateAttribute(string xmlPath)
        {
            XDocument xDoc = XDocument.Load(xmlPath);
            IEnumerable<XElement> xElement = xDoc.Element("BookStore").Elements("Book");
            foreach (var element in xElement)
            {
                element.SetAttributeValue("Name", "Zery");
            }
            xDoc.Save(xmlPath);
        }

        public void Delete(string xmlPath)
        {
            XDocument xDoc = XDocument.Load(xmlPath);
            XElement element = (XElement)xDoc.Element("BookStore").Element("Book");
            element.Remove();
            xDoc.Save(xmlPath);
        }

        public void DeleteAttribute(string xmlPath)
        {
            XDocument xDoc = XDocument.Load(xmlPath);
            //不能跨级取节点
            XElement element = xDoc.Element("BookStore").Element("Book").Element("Name");
            element.Attribute("BookName").Remove();
            xDoc.Save(xmlPath);
        }

        public void ModifyAttribute(string xmlPath)
        {
            XDocument xDoc = XDocument.Load(xmlPath);
            XElement element = xDoc.Element("BookStore").Element("Book");
            element.SetAttributeValue("BookName","ZeryTest");
            xDoc.Save(xmlPath);
        }

    }

    internal class XmlWriteReadOperation
    {

    }

    class XmlWriteReadLinqOperation
    {

        public void CreatXmlTree(string xmlPath)
        {
            XElement xElement = new XElement(
                new XElement("BookStore",
                    new XElement("Book",
                        new XElement("Name", "C#入门", new XAttribute("BookName", "C#")),
                        new XElement("Author", "Martin", new XAttribute("Name", "Martin")),
                        new XElement("Adress", "上海"),
                        new XElement("Date", DateTime.Now.ToString("yyyy-MM-dd"))
                        ),
                    new XElement("Book",
                        new XElement("Name", "WCF入门", new XAttribute("BookName", "WCF")),
                        new XElement("Author", "Mary", new XAttribute("Name", "Mary")),
                        new XElement("Adress", "北京"),
                        new XElement("Date", DateTime.Now.ToString("yyyy-MM-dd"))
                        )
                        )
                );

            //需要指定编码格式，否则在读取时会抛：根级别上的数据无效。 第 1 行 位置 1异常
            XmlWriterSettings settings = new XmlWriterSettings();
            settings.Encoding = new UTF8Encoding(false);
            settings.Indent = true;
            XmlWriter xw = XmlWriter.Create(xmlPath,settings);
            xElement.Save(xw);
            //写入文件
            xw.Flush();
            xw.Close();
        }

        public void WriteXml(string xmlPath)
        {
            XElement xElement = new XElement(
                new XElement("Store",
                    new XElement("Book", "技术类",
                        new XElement("Name", "C#入门", new XAttribute("BookName", "C#")),
                        new XElement("Author", "Martin", new XAttribute("Name", "Zery")),
                        new XComment("以下为注释"),//xml注释
                        new XElement("Date", DateTime.Now.ToString(), new XAttribute("PublicDate", DateTime.Now.ToString()))
                        ))
                );

            XmlWriter xw = XmlWriter.Create(xmlPath);
            //保存到XmlWriter
            xElement.Save(xw);
            //写入文件
            xw.Flush();
            xw.Close();

        }

    }
}