XML的高手帮帮忙啊

                XmlNodeList nodes = dom.SelectNodes(string.Format("/root/netstation[@id={0}]/devicetype[@id={1}]/device[@id={2}]/*", txtStation.Text, txtDevicetype.Text, txtDevice.Text));
                if (nodes != null)
                {
                    for (int i = 0; i < nodes.Count; i++)
                    {
                        sid += nodes[i].Attributes["id"].InnerText;
                        sval+= nodes[i].Attributes["value"].InnerText;                     
                    }

                    DataTable dt = new DataTable();
                    dt.Columns.Add("ID");
                    dt.Columns.Add("Value");
                    dt.Rows.Add(new object[] { sid, sval });
                    GridView1.DataSource = dt.DefaultView;
                    GridView1.DataBind();  
                }
                else
                {
                    Response.Write("<script>alert('没有此设备！');</script>");
                    clean();

                }

 

 

显示结果很郁闷：

都到一行去了，本来是有两个ID,分别是1和2，value分别是sss和ddd

怎样使使他们不在一行

 

 

sid += nodes[i].Attributes["id"].InnerText;
 sval+= nodes[i].Attributes["value"].InnerText;  
你这样不是把两个数据放在一起，
你应该数据放在一个数据里面