标签：xpath 指定 example settings root tar [] ref ogr
假定创建了XmlWriter的实例变量xmlWriter，下文中将使用此实例变量写Xml
1.如何使用XmlWriter写Xml文档声明
// WriteStartDocument方法可以接受一个bool参数（表示standalone，是否为独立文档）或者不指定参数standalone保持默认值xmlWriter.WriteStartDocument(false|true); |
注意在使用WriteStartDocument方法后最好调用xmlWrite.WriteEndDocument()方法来关闭所有可能未关闭标签
2.如何使用XmlWriter写xml节点以及属性
//写节点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(); |
或者通过WriteElementString(string,string)方法写xml节点同时写下节点值，如下
//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"); |
3.如何写CData
xmlWriter.WriteStartElement("dog");//写CDataxmlWriter.WriteCData("<strong>dog is dog</strong>");xmlWriter.WriteEndElement(); |
4.如何使用XmlWriter添加注释
xmlWriter.WriteComment("this is an example writed by http://www.baidu.com/"); |
5.如何设置XmlWriter的输出格式，解决输出UTF-16问题
设置xml输出格式，需要通过XmlWriterSettings类，如下代码
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; |
完整的代码示例如下：
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(); xmlWriter.WriteComment("this is an example writed by http://www.baidu.com/"); 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(); } }} |
C#处理Xml的相关随笔：
标签：xpath 指定 example settings root tar [] ref ogr
原文地址：http://www.cnblogs.com/shigezhuang/p/7406105.html
