asp.net C#操作xml文档实现代码

XmlDocument xmldoc = new XmlDocument();
            //在XML的文档的最头部加入XML的声明段落
            XmlNode xmlnode = xmldoc.CreateNode(XmlNodeType.XmlDeclaration, "", "");
            xmldoc.AppendChild(xmlnode);
            //创建根节点
            XmlElement root = xmldoc.CreateElement("root");
            root.InnerText = "我是根节点";
            xmldoc.AppendChild(root);

            xmldoc.Save(@"D:My DocumentsVisual Studio 2010ProjectsWebApplication2WebApplication2test.xml");

<?xml version="1.0"?> 
我是根节点

XmlDocument xmldoc = new XmlDocument();
            xmldoc.LoadXml(
            "<?xml version="1.0" encoding="utf-8" ?>" +
            "我是根节点"   
            );
            xmldoc.Save(@"D:My DocumentsVisual Studio 2010ProjectsWebApplication2WebApplication2test.xml");

<?xml version="1.0" encoding="utf-8"?>

   
        minglecun
        55
   
   
        huluwa
        1
   

XmlDocument xmldoc = new XmlDocument();
            xmldoc.Load(@"D:My DocumentsVisual Studio 2010ProjectsWebApplication2WebApplication2test.xml");
            //读某个节点
            XmlNode xmlnode = xmldoc.SelectSingleNode("//root");
            Console.WriteLine(xmlnode.InnerXml);
            Console.WriteLine("------------------------------------------------");
            XmlNode xmlnode1 = xmldoc.SelectSingleNode("//root//list");
            Console.WriteLine(xmlnode1.InnerXml);
            Console.WriteLine("------------------------------------------------");
            //
            XmlNodeList xn0 = xmldoc.SelectSingleNode("//root").ChildNodes;
            foreach (XmlNode node in xn0)
            {
                Console.WriteLine("========"+node.Name);
            }