protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
    {
        if (e.CommandName == "look1")
        {
            Int32 id = Int32.Parse(DataList1.DataKeys[e.Item.ItemIndex].ToString());//获得当前商品编号
            Response.Write("<script language='javascript'>window.open('goodslook.aspx?goodid=" + id + "');document.location=document.location;</script>");
            //在新窗口中弹出商品详细信息页面
        }

if (!IsPostBack)
        {

            SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["connstr"]);
            conn.Open();
            Int32 id = Convert.ToInt32(Request.QueryString["goodsid"]);
            string sql = "select * from dbo.Goods where GoodsID=" + id;
            SqlDataAdapter sda = new SqlDataAdapter(sql, conn);
            DataSet ds = new DataSet();
            sda.Fill(ds);

           this.Label1.Text = ds.Tables[0].Rows[0][3].ToString();

Int32 id = Convert.ToInt32(Request.QueryString["goodsid"]);