public void edit(BannerAndLink model)
 {
     if (model.uploadFile != null && model.uploadFile.ContentLength > 0)
     {
         model.dbFile = db.dbFile.Where(x => x.sqno == model.dbFileSqno).FirstOrDefault();
         if (model.dbFile == null)
         {
             model.storeFile();
             model.dbFile.createDate = DateTime.Now;
             db.dbFile.Add(model.dbFile);
             db.SaveChanges();
             model.dbFileSqno = model.dbFile.sqno;
         }
         else
         {
             model.storeFile();
             db.Entry(model.dbFile).State = EntityState.Modified;
             db.SaveChanges();
         }
     }
     db.Entry(model).State = EntityState.Modified;
     db.SaveChanges();
 }
        public void create(BannerAndLink model)
        {
            if (model.uploadFile != null && model.uploadFile.ContentLength > 0)
            {
                model.storeFile();
                model.dbFile.createDate = DateTime.Now;
                db.dbFile.Add(model.dbFile);
                db.SaveChanges();
                model.dbFileSqno = model.dbFile.sqno;
            }

            model.createDate = DateTime.Now;
            db.bannerAndLink.Add(model);
            db.SaveChanges();
        }