private void AddTestDataForInMemory() { var productsContext = new ProductsContext(); productsContext.AddRangeAsync( new[] { new Product { Name = "Tomato Soup", Category = "Groceries", Price = 1 }, new Product { Name = "Yo-yo", Category = "Toys", Price = 3.75M }, new Product { Name = "Hammer", Category = "Hardware", Price = 16.99M } }); productsContext.SaveChangesAsync(); }