protected void Button2_Click(object sender, EventArgs e)
        {
            String s = goodsId.Value.ToString();
            String p = price.Value.ToString();
            bool   a = Goods_C.AlterByID(s, p);

            if (a == true)
            {
                Response.Write("<script language=javascript>window.alert('修改成功');</script>");
            }
            else
            {
                Response.Write("<script language=javascript>window.alert('修改失败');</script>");
            }
            goods = Goods_C.SelectFuzzy(s);
        }