/// <summary>
/// 限时抢购排重：验证商品在一段时间内是否存在有效的团购活动
/// </summary>
public bool CheckGroupBuyConflict(int productSysNo, DateTime begindate, DateTime enddate)
{
List <int> productSysNos = new List <int>();
productSysNos.Add(productSysNo);
return(m_GroupBuyingDA.CheckConflict(0, productSysNos, begindate, enddate));
}