public ActionResult Edit(string id)
 {
     BuyerModel model = new BuyerModel(service.GetSingle(id, AuthenticationHelper.CompanyId.Value));
     if (model == null)
         return HttpNotFound();
     return View(model);
 }
 private string Save(BuyerModel model)
 {
     Buyer entity = GetEntityByModel(model);
     return model.Id > 0
         ? service.Update(entity)
         : service.Insert(entity);
 }
 private Buyer GetEntityByModel(BuyerModel model)
 {
     if (model == null) return null;
     Buyer entity = new Buyer();
     entity.Id = model.Id;
     entity.Name = model.Name;
     entity.SOBId = SessionHelper.SOBId;
     entity.StartDate = model.StartDate;
     entity.EndDate = model.EndDate;
     if (model.Id == 0)
     {
         entity.CreateBy = AuthenticationHelper.UserId;
         entity.CreateDate = DateTime.Now;
         entity.CompanyId = AuthenticationHelper.CompanyId.Value;
     }
     else
     {
         entity.CreateBy = model.CreateBy;
         entity.CreateDate = model.CreateDate;
         entity.CompanyId = model.CompanyId;
     }
     entity.UpdateBy = AuthenticationHelper.UserId;
     entity.UpdateDate = DateTime.Now;
     return entity;
 }
 public ActionResult Edit(BuyerModel model)
 {
     if (ModelState.IsValid)
     {
         Save(model);
         return RedirectToAction("Index");
     }
     return View(model);
 }