public void CreatXmlFile()

        {

            XmlDocument xmlDoc = new XmlDocument();

            //创建类型声明节点

            XmlNode node = xmlDoc.CreateXmlDeclaration("1.0", "utf-8", "");

            xmlDoc.AppendChild(node);

            //创建根节点

            XmlNode root = xmlDoc.CreateElement("Users");

            xmlDoc.AppendChild(root);

            for (int i = ; i < ; i++)

            {

                XmlNode node1 = xmlDoc.CreateNode(XmlNodeType.Element,"User",null);

                CreateNode(xmlDoc, node1, "name", "xuwei");

                CreateNode(xmlDoc, node1, "sex", "male");

                CreateNode(xmlDoc, node1, "age", "");

                XmlNode node2 = xmlDoc.CreateNode(XmlNodeType.Element, "items", null);

                CreateNode(xmlDoc, node2, "item", "item");

                CreateNode(xmlDoc, node2, "item", "item");

                CreateNode(xmlDoc, node2, "item", "item");

                node1.AppendChild(node2);

                root.AppendChild(node1);

            }

            try

            {

                xmlDoc.Save("E://data2.xml");

            }

            catch (Exception e)

            {

                //显示错误信息

                Console.WriteLine(e.Message);

            }

        }

private void CreateNode(XmlDocument xmlDoc, XmlNode parentNode, string name, string value)

{

    XmlNode node = xmlDoc.CreateNode(XmlNodeType.Element, name, null);

    node.InnerText = value;

    parentNode.AppendChild(node);

}

        static void Main(string[] args)

        {

            Program app = new Program();

            app.CreatXmlFile();

            Console.WriteLine("生成成功！");

        }