细致引见运用XmlWriter写Xml的示例代码【XML教程】,XmlWriter，Xml

假定创建了XmlWriter的实例变量xmlWriter，下文中将运用此实例变量写Xml

1.怎样运用XmlWriter写Xml文档声明

// WriteStartDocument要领能够接收一个bool参数（示意standalone，是不是为自力文档）或许不指定参数standalone坚持默许值
xmlWriter.WriteStartDocument(false|true);

注重在运用WriteStartDocument要领后最好挪用xmlWrite.WriteEndDocument()要领来封闭一切能够未封闭标签
2.怎样运用XmlWriter写xml节点以及属性

//写节点
xmlWriter.WriteStartElement("cat");
//给节点增加属性
xmlWriter.WriteAttributeString("color", "white");
//给节点内部增加文本
xmlWriter.WriteString("I'm a cat");
xmlWriter.WriteEndElement();

或许经由过程WriteElementString(string,string)要领写xml节点同时写下节点值，以下

//经由过程WriteElementString能够增加一个节点同时增加节点内容
xmlWriter.WriteElementString("pig", "pig is great");

3.怎样写CData

xmlWriter.WriteStartElement("dog");
//写CData
xmlWriter.WriteCData("<strong>dog is dog</strong>");
xmlWriter.WriteEndElement();

4.怎样运用XmlWriter增加解释

xmlWriter.WriteComment("this is an example writed by 玉开手艺博客 http://www.ki4.cn/ ");

5.怎样设置XmlWriter的输出花样，处理输出UTF-16题目
设置xml输出花样，须要经由过程XmlWriterSettings类，以下代码

XmlWriterSettings settings = new XmlWriterSettings();
//请求缩进
settings.Indent = true;
//注重假如不设置encoding默许将输出utf-16
//注重这儿不能直接用Encoding.UTF8假如用Encoding.UTF8将在输出文本的最前面增加4个字节的非xml内容
settings.Encoding = new UTF8Encoding(false);
                
//设置换行符
settings.NewLineChars = Environment.NewLine;

完全的代码示例以下：

/*玉开手艺博客 http://www.ki4.cn/ */
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();
                //请求缩进
                settings.Indent = true;
                //注重假如不设置encoding默许将输出utf-16
                //注重这儿不能直接用Encoding.UTF8假如用Encoding.UTF8将在输出文本的最前面增加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文件最先<?xml version="1.0" encoding="utf-8" ?>
                    xmlWriter.WriteStartDocument(false);
                    //写根节点
                    xmlWriter.WriteStartElement("root");
                    //写字节点
                    xmlWriter.WriteStartElement("cat");
                    //给节点增加属性
                    xmlWriter.WriteAttributeString("color", "white");
                    //给节点内部增加文本
                    xmlWriter.WriteString("I'm a cat");
                    xmlWriter.WriteEndElement();


                    //经由过程WriteElementString能够增加一个节点同时增加节点内容
                    xmlWriter.WriteElementString("pig", "pig is great");


                    xmlWriter.WriteStartElement("dog");
                    //写CData
                    xmlWriter.WriteCData("<strong>dog is dog</strong>");
                    xmlWriter.WriteEndElement();

                    xmlWriter.WriteComment("this is an example writed by 玉开手艺博客 http://www.ki4.cn/ ");

                    xmlWriter.WriteEndElement();
                    xmlWriter.WriteEndDocument();

                }

                //将xml内容输出到掌握台中
                string xml = Encoding.UTF8.GetString(ms.ToArray());
                Console.WriteLine(xml);
            }
            Console.Read();

        }
    }
}

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