<轉載>XML操做

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 讀寫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 三者之間的關係用圖畫出
             * 2 XMLElement 主要是針對節點的一些屬性進行操做
             * 3 XMLDocument 主要是針對節點的CUID操做
             * 4 XMLNode 爲抽象類，作爲以上兩類的基類，提供一些操做節點的方法
             */

            //===========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 給指定的XML節點的全部子節點增長一個節點，並增長屬性
             *2 刪除指定節點的子節點的指定屬性
             *3
             */
            string lxmlPath = @"F:\XmlTest\test.xml";
            xOperation.Create(lxmlPath);
            xOperation.CreateAttribute(lxmlPath);
            //xperation.Delete(lxmlPath);
            //xOperation.DeleteAttribute(lxmlPath);
           // xOperation.ModifyAttribute(lxmlPath);

            /*=============C# 讀寫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;//取到根結點

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

            //添加爲根元素的第一層子結點
            root.AppendChild(newNode);
            xmlDoc.Save(xmlPath);
        }
        //屬性
        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;//取到根結點

            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");
            //移除指定屬性
            node.RemoveAttribute("Name");
            //移除當前節點全部屬性，不包括默認屬性
            node.RemoveAllAttributes();

            xmlDoc.Save(xmlPath);

        }

        public void Modify(string xmlPath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            var root = xmlDoc.DocumentElement;//取到根結點
            XmlNodeList nodeList = xmlDoc.SelectNodes("/Collection/Book");
            //xml不能直接更改結點名稱，只能複製而後替換，再刪除原來的結點
            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);
            //取根結點
            var root = xmlDoc.DocumentElement;//取到根結點
            //取指定的單個結點
            XmlNode singleNode = xmlDoc.SelectSingleNode("Collection/Book");

            //取指定的結點的集合
            XmlNodeList nodes = xmlDoc.SelectNodes("Collection/Book");

            //取到全部的xml結點
            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
    {
        //其它操做
        public void OtherOperaton()
        {
            //加文件頭
        }



        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);
            //不能跨級取節點
            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#入門", 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入門", 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"))
                        )
                        )
                );

            //須要指定編碼格式，不然在讀取時會拋：根級別上的數據無效。 第 1 行 位置 1異常
            XmlWriterSettings settings = new XmlWriterSettings();
            settings.Encoding = new UTF8Encoding(false);
            settings.Indent = true;
            XmlWriter xw = XmlWriter.Create(xmlPath,settings);
            xElement.Save(xw);
            //寫入文件
            xw.Flush();
            xw.Close();
        }




        public void WriteXml(string xmlPath)
        {
            XElement xElement = new XElement(
                new XElement("Store",
                    new XElement("Book", "技術類",
                        new XElement("Name", "C#入門", new XAttribute("BookName", "C#")),
                        new XElement("Author", "Martin", new XAttribute("Name", "Zery")),
                        new XComment("如下爲註釋"),//xml註釋
                        new XElement("Date", DateTime.Now.ToString(), new XAttribute("PublicDate", DateTime.Now.ToString()))
                        ))
                );
       
            XmlWriter xw = XmlWriter.Create(xmlPath);
            //保存到XmlWriter
            xElement.Save(xw);
            //寫入文件
            xw.Flush();
            xw.Close();

        }


    }
}