protected void Page_Load(object sender, EventArgs e)
{
CurrentPromotion = GetPromotion();
if (CurrentPromotion == null || CurrentPromotion.IsDel == 1 || CurrentPromotion.EndTime < DateTime.Now)
{
Response.Write("<script>alert('该促销已过期！');history.go(-1);</script>");
Response.End();
}
}
