ASP.NET 创建XML

 public void CreatXml(int oid)
        {
            XmlTextWriter writer = null;
           string fileName ="a"+ oid.ToString() + ".xml";
            string path = HttpContext.Current.Request.PhysicalApplicationPath + "al/";
            writer = new XmlTextWriter(path + fileName, null);
            //为使文件易读，使用缩进
            writer.Formatting = Formatting.Indented;
            //写XML声明版本1.0
            writer.WriteStartDocument();
            //写一个元素（根元素）
            writer.WriteStartElement("ClassOne");
            //关闭根元素
            writer.WriteEndElement();
            writer.WriteEndDocument();
            //缓冲器内的内容写入文件
            writer.Flush();
            writer.Close();
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.PreserveWhitespace = true;
            //加载文件
      &nbs