删除节点

实例：删除所有节点

        private void button1_Click(object sender, EventArgs e)

        {

            XmlDocument xmlDoc = new XmlDocument();

            xmlDoc.Load("f:\\books.xml");

            XmlElement root = xmlDoc.DocumentElement;

            root.RemoveAll();

            xmlDoc.Save("F:\\books.xml");

        }

实例：删除最后一个节点

        private void button1_Click(object sender, EventArgs e)

        {

            XmlDocument xmlDoc = new XmlDocument();

            xmlDoc.Load("f:\\books.xml");

            XmlElement root = xmlDoc.DocumentElement;

            if (root.HasChildNodes)

            {

                XmlNode book = root.LastChild;

                root.RemoveChild(book);

                xmlDoc.Save("f:\\books.xml");

            }

        }