刷新后 按钮事件再次执行的解决办法

ClientScript.RegisterStartupScript(GetType(), "Message", "<SCRIPT LANGUAGE='javascript'>alert('恭喜您，您是第 " + (count).ToString() + " 位团购成功者，您的团购活动码为：" + model_group_purchase.Password + "！');top.location=top.location</script>");