//设置配置文件物理路径

     public string xmlPath = "/manage/spider/config.xml";

     protected void Page_Load(object sender, EventArgs e)

     {

         if (!IsPostBack)

         {

             //设置程序物理路径+文件物理路径

             string path = Request.PhysicalApplicationPath + xmlPath;

             //获取XML元素对象

             XElement config = XElement.Load(path);

             if (config != null)

             {

                 //获得节点子元素

                 XElement eleAmazonDetailUrl = config.Element("AmazonDetailUrl");

                 XElement eleAmazonListUrl = config.Element("AmazonListUrl");

                 XElement eleHz = config.Element("Hz");

                 XElement eleCount = config.Element("Count");

                 //在页面上呈现取到的数据

                 if (eleAmazonDetailUrl != null)

                     TextBox_AmazonDetailUrl.Text = eleAmazonDetailUrl.Value;

                 if (eleAmazonListUrl != null)

                     TextBox_AmazonListUrl.Text = eleAmazonListUrl.Value;

                 if (eleHz != null)

                     TextBox_Hz.Text = eleHz.Value;

                 if (eleCount != null)

                     TextBox_Count.Text = eleCount.Value;

             }

             else

                 Response.Write("");

         }

     }

     protected void btn_Save_Click(object sender, EventArgs e)

     {

         //设置XML文件路径

         string path = Request.PhysicalApplicationPath + xmlPath;

         //设置节点的名称和内容

         XElement root = new XElement("Settings",

              new XElement("AmazonDetailUrl", TextBox_AmazonDetailUrl.Text.Trim()),

              new XElement("AmazonListUrl", TextBox_AmazonListUrl.Text.Trim()),

              new XElement("Hz", TextBox_Hz.Text.Trim()),

              new XElement("Count", TextBox_Count.Text.Trim())

                  );

         //将元素序列化到指定路径的XML文件当中

         root.Save(path);

      }