public ActionResult ProductModels_Create([DataSourceRequest]DataSourceRequest request, ProductModel productModel)
        {
            if (ModelState.IsValid)
            {
                var entity = new ProductModel
                {
                    Name = productModel.Name,
                    CatalogDescription = productModel.CatalogDescription,
                    Instructions = productModel.Instructions,
                    rowguid = Guid.NewGuid(),
                    ModifiedDate =DateTime.Now
                };

                db.ProductModels.Add(entity);
                db.SaveChanges();
                productModel.ProductModelID = entity.ProductModelID;
            }

            return Json(new[] { productModel }.ToDataSourceResult(request, ModelState));
        }
        public ActionResult ProductModels_Destroy([DataSourceRequest]DataSourceRequest request, ProductModel productModel)
        {
            if (ModelState.IsValid)
            {
                var entity = new ProductModel
                {
                    ProductModelID = productModel.ProductModelID,
                    Name = productModel.Name,
                    CatalogDescription = productModel.CatalogDescription,
                    Instructions = productModel.Instructions,
                    rowguid = productModel.rowguid,
                    ModifiedDate = productModel.ModifiedDate
                };

                db.ProductModels.Attach(entity);
                db.ProductModels.Remove(entity);
                db.SaveChanges();
            }

            return Json(new[] { productModel }.ToDataSourceResult(request, ModelState));
        }
        public ActionResult ProductModels_Update([DataSourceRequest]DataSourceRequest request, ProductModel productModel)
        {
            if (ModelState.IsValid)
            {
                var entity = new ProductModel
                {
                    ProductModelID = productModel.ProductModelID,
                    Name = productModel.Name,
                    CatalogDescription = productModel.CatalogDescription,
                    Instructions = productModel.Instructions,
                    rowguid = productModel.rowguid,
                    ModifiedDate = DateTime.Now
                };

                db.ProductModels.Attach(entity);
                db.Entry(entity).State = System.Data.Entity.EntityState.Modified;
                db.SaveChanges();
            }

            return Json(new[] { productModel }.ToDataSourceResult(request, ModelState));
        }