XML配置的文件的读写

            //读配置文件
            XmlDocument doc = new XmlDocument();
            doc.Load("blog.xml");
            XmlNode url = doc.SelectSingleNode("博客/广告地址");
            texturl.Text = url.InnerText;

            XmlNode Name = doc.SelectSingleNode("博客/用户名1");
            name = Name.InnerText;

            XmlNode Password = doc.SelectSingleNode("博客/密码1");
            password = Password.InnerText;

            XmlNode dbid = doc.SelectSingleNode("博客/DBID");
            DBID = int.Parse(dbid.InnerText);
            
                //写配置文件
                XmlDocument doc = new XmlDocument();
                doc.Load("blog.xml");
                XmlNode xiugai = doc.SelectSingleNode("博客");
                xiugai["DBID"].InnerText = DBID.ToString();   //修改值
                doc.Save("blog.xml");