public static string AddProducts(string Title, string Short_decription, string Long_description, int Category, int Sub_category, int Third_category, decimal Price) { try { Nullable <int> ThirdCatID = null; PAWDStoreEntities context = new PAWDStoreEntities(); var status = context.ProductInsert(Title, Short_decription, Long_description, DateTime.Now, null, Category, Sub_category, Third_category == 0 ? ThirdCatID : Third_category, Price).SingleOrDefault(); return(JsonConvert.SerializeObject(status)); } catch (Exception ex) { throw ex.InnerException; } }