使用XmlWriter创建XML文件

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using System.Xml;

 

namespace UseXmlWriter

{

    class Program

    {

        static void Main(string[] args)

        {

            using (MemoryStream ms = new MemoryStream())

            {

                XmlWriterSettings settings = new XmlWriterSettings();

                //要求缩进

                settings.Indent = true;

                //注意如果不设置encoding默认将输出utf-16

                //注意这儿不能直接用Encoding.UTF8如果用Encoding.UTF8将在输出文本的最前面添加4个字节的非xml内容

                settings.Encoding = new UTF8Encoding(false);

                 

                //设置换行符

                settings.NewLineChars = Environment.NewLine;

 

                using (XmlWriter xmlWriter = XmlWriter.Create(ms, settings))

                {

 

                    //写xml文件开始<?xml version="1.0" encoding="utf-8" ?>

                    xmlWriter.WriteStartDocument(false);

                    //写根节点

                    xmlWriter.WriteStartElement("root");

                    //写字节点

                    xmlWriter.WriteStartElement("cat");

                    //给节点添加属性

                    xmlWriter.WriteAttributeString("color", "white");

                    //给节点内部添加文本

                    xmlWriter.WriteString("I'm a cat");

                    xmlWriter.WriteEndElement();

 

 

                    //通过WriteElementString可以添加一个节点同时添加节点内容

                    xmlWriter.WriteElementString("pig", "pig is great");

 

 

                    xmlWriter.WriteStartElement("dog");

                    //写CData

                    xmlWriter.WriteCData("<strong>dog is dog</strong>");

                    xmlWriter.WriteEndElement();

     
                    //添加注释
                    xmlWriter.WriteComment("this is an example writed");

 

                    xmlWriter.WriteEndElement();

                    xmlWriter.WriteEndDocument();

 

                }

 

                //将xml内容输出到控制台中

                string xml = Encoding.UTF8.GetString(ms.ToArray());

                Console.WriteLine(xml);

            }

            Console.Read();

 

        }

    }

}