private string GetFreightStr(long productId, decimal discount, string skuId, int addressId)
{
string freightStr = "免运费";
//if (addressId <= 0)//如果用户的默认收货地址为空，则运费没法计算
// return freightStr;
bool isFree = false;
if (addressId > 0)
{
isFree = ProductManagerApplication.IsFreeRegion(productId, discount, addressId, 1, skuId);//默认取第一个规格
}
if (isFree)
{
freightStr = "免运费";//卖家承担运费
}
else
{
decimal freight = ServiceApplication.Create <IProductService>().GetFreight(new List <long>()
{
productId
}, new List <int>()
{
1
}, addressId);
freightStr = freight <= 0 ? "免运费" : string.Format("运费 {0}元", freight.ToString("f2"));
}
return(freightStr);
}