//用户发布商品的函数1
        public bool PublishCommodity(List<Commodity> CommodityList)
        {
            bool IsSuccess = false; //插入是否成功
            //数据库访存器
            DatabaseAccess.DataClasses1DataContext DBAccessor = new DataClasses1DataContext();

            if (CommodityList != null)
            {
                foreach (Commodity commodity in CommodityList)
                {
                    //调用的存储过程插入数据库
                    //没有价格,没有tag,没有,图片
                    try
                    {
                        //插入商品
                        DBAccessor.insertCommodity(commodity.ID, commodity.UserName, commodity.Name, commodity.description,commodity.StartTime, commodity.EndTime, commodity.Price, commodity.ImageUrl, (int)commodity.kind,commodity.popularity);

                        IsSuccess = true;
                    }
                    catch (Exception e)
                    {
                        IsSuccess = false;
                        break;
                    }

                    //插入属于商品的标签
                    foreach (Tag tag in commodity.tagList)
                    {
                        try
                        {
                            DBAccessor.insertTag(tag.name, commodity.ID);
                        }
                        catch (Exception e)
                        {

                        }
                    }
                }
            }

            return IsSuccess;
        }