private static void BrandTest() { BrandManager brandManager = new BrandManager(new EfBrandDal()); Console.WriteLine(brandManager.GetBrandId(2).Data.BrandName); brandManager.Add(new Brand { BrandName = "Audi" }); brandManager.Delete(new Brand { BrandId = 3 }); brandManager.Update(new Brand { BrandId = 2, BrandName = "Renault" }); foreach (var brand in brandManager.GetAll().Data) { Console.WriteLine("Brand Id :" + brand.BrandId + "---->" + "Brand Name :" + brand.BrandName); } var result = brandManager.Add(new Brand { BrandName = "X" }); if (result.Success == true) { Console.WriteLine(result.Message); } else { Console.WriteLine(result.Message); } }