Asp.NET Xml 初试

XmlDocument doc = new XmlDocument();

            //SelectSIngleNote and SelectNodes
            doc.Load("data.xml");
            XmlNodeList xnlist = doc.SelectNodes("books/book");
            foreach (XmlNode xn in xnlist)
            {
                Console.WriteLine(xn.OuterXml);
                XmlNode titleNode = xn.SelectSingleNode("title");
                Console.WriteLine(xn.InnerText);
                Console.WriteLine("  ");
            }

            //Add xmlNode Attribute and get attributorNote
            doc.Load("data5.xml");
            XmlNodeList xn1list = doc.SelectNodes("books/book");
            foreach (  XmlNode xn   in xn1list)
            {
                XmlAttribute xmlAttr = doc.CreateAttribute("Author");
                xmlAttr.Value = "Gzh4455";
                xn.Attributes.Append(xmlAttr);

                //XmlAttribute idAttributor = xn.Attributes["id"];
                //Console.WriteLine(idAttributor.Value);
                //Console.WriteLine(" ");
            }
            doc.Save("data5.xml");
            Console.ReadKey();

            //LoadXml and CreateNode and save xmldocument
            doc.LoadXml("<book><title>Morning</title><price>20.5</price></book>");
            XmlNode xne = doc.CreateNode("element", "pages", "");
            xne.InnerText = "290";
            XmlElement rootElement = doc.DocumentElement;

            rootElement.AppendChild(xne);
            Console.Write(doc.OuterXml);
            doc.Save("data.xml");
            Console.ReadKey();

            //doc.Load("data4.xml");
            //XmlNode xn = doc.SelectSingleNode("book/person/age");
            //xn.InnerText = "30";
            //doc.Save("data4.xml");
            //Console.WriteLine(xn.InnerText);


            //AppendChild
            doc.Load("data.xml");
            Console.WriteLine(doc.OuterXml);
            XmlNode xn2 = doc.CreateNode("element", "person", "");
            XmlNode age = doc.CreateNode("element", "age", "");
            age.InnerText = "28";
            xn2.AppendChild(age);
            doc.DocumentElement. AppendChild(xn2);
            doc.Save("data.xml");


            //XmlTextWriter writer = new XmlTextWriter("data4.xml", null);
            //writer.Formatting = Formatting.Indented;
           // doc.Save(writer);

           

            Console.ReadKey();

下面是一些尝试过的方法