对DataGrid字段动态连接

当点击DataGrid（index.aspx）中的字段时，动态连接到newsshow.aspx页面，newsshow.aspx是一个动态的页面，利用传递过来的newsid字段来在newsshow.aspx动态的生成网页。就是浏览详细信息。我现在newsshow.aspx中代码有些问题，请大家指教！
public String newsid;
        public DataRow dr;

        private void Page_Load(object sender, System.EventArgs e)
        {// 在此处放置用户代码以初始化页面
            if(!IsPostBack)
                DataGridDataBind();
        }
        
        private void DataGridDataBind()
        {
            //取得上个页面传递来的参数值
            newsid = Request.Params["newsid"];
            SqlConnection sqlcon = new SqlConnection("server=.;uid=sa;pwd=;database=community");
            //sqlcon.Open;
            string sqlnews="select * from news where newsid =" + newsid;
            SqlDataAdapter MyCommandnews = new SqlDataAdapter(sqlnews,sqlcon);
            DataSet ds = new DataSet ();
            MyCommandnews.Fill(ds,"news");
            dr = ds.Tables["news"].Rows[0];
                    }