public string upJD(int Id)
        {
            WebApplication1.EF.product p = context.product.FirstOrDefault(a => a.ID == Id);
            string path = Server.MapPath("~/zl/") + p.Name;
            var    file = Request.Files["jd"];
            string date = DateTime.Now.Year + "年" + DateTime.Now.Month + "月";

            file.SaveAs(path + "/" + date + ".doc");
            EF.upjd u = new upjd();
            u.ProductID = Id;
            u.upDate    = DateTime.Now.ToString();
            context.upjd.Add(u);
            context.SaveChanges();
            return("success");
        }
        public string upJD(int Id, string lb)
        {
            product p    = context.product.FirstOrDefault(a => a.ID == Id);
            string  path = Server.MapPath("~/zl/") + p.Name;
            var     file = Request.Files["jd"];

            if (lb == "进度")
            {
                string date = DateTime.Now.Year + "年" + DateTime.Now.Month + "月";
                file.SaveAs(path + "/" + date + "." + file.FileName.Split('.')[file.FileName.Split('.').Count() - 1]);
            }
            else
            {
                file.SaveAs(path + "/" + lb + "." + file.FileName.Split('.')[file.FileName.Split('.').Count() - 1]);
            }
            upjd u = new upjd();

            u.ProductID = Id;
            u.upDate    = DateTime.Now.ToString();
            context.upjd.Add(u);
            context.SaveChanges();
            return("success");
        }