使用XmlWriter写XML文件

private const string filename = "demo.xml";

        static void Main(string[] args)

        {

            XmlTextWriter writer=new XmlTextWriter(filename,null);

            //进行输出格式缩进设置

            writer.Formatting = Formatting.Indented;

            //写XML声明

            writer.WriteStartDocument();



            //写出<?name text>的形式

            string PItext = "type='text/xsl' href='book.xsl'";

            writer.WriteProcessingInstruction("xml-stylesheet", PItext);



            //写DOCTYPE声明

            writer.WriteDocType("book", null, null, "<!ENTITY h 'hardcover'>");

            //写注释

            writer.WriteComment("这是xml注释行");

            //写一个开始元素（根元素）

            writer.WriteStartElement("book");

            //属性

            writer.WriteAttributeString("genre","novel");

            writer.WriteAttributeString("ISBN","1-234-4546");

            //书名元素

            writer.WriteElementString("title","XML大全");

            ////Write the style element

            writer.WriteStartElement("style");

            writer.WriteEntityRef("h");

            writer.WriteEndElement();



            writer.WriteElementString("price","23");

            //写入ＣＤＡＴＡ

            writer.WriteCData("Prices 15% off!!!");

            //关闭根元素

            writer.WriteEndElement();

            //结束编写

            writer.WriteEndDocument();

            //缓冲区的内容写入文件

            writer.Flush();

            writer.Close();

            //声明XML文档并加载

            XmlDocument doc = new XmlDocument();

            doc.PreserveWhitespace = true;

            doc.Load(filename);

            //将XML内容显示在控制台

            Console.Write(doc.InnerXml);

            Console.In.Read();