/// <summary> /// Handles displaying the order history of a given customer ID. /// </summary> private static void HandleRequestDisplayOrderHistoryOfCustomer() { Log.Information("Handling request displaying order history of customer"); Console.WriteLine("[?] What is the customer ID"); string inputCustomerId = Console.ReadLine(); Log.Information($"User entered '{inputCustomerId}' for customer id"); if (!Int32.TryParse(inputCustomerId, out int customerId)) { throw new FormatException("[!] Input for customer ID is not an integer"); } if (CustomerData.GetCustomerWithId(customerId) is null) { throw new BusinessCustomerException($"[!] Customer {customerId} does not exist"); } ICollection <BusinessOrder> ordersWithCustomer = OrderData.GetOrdersWithCustomerId(customerId); Console.WriteLine($"[*] There are {ordersWithCustomer.Count} orders for customer {customerId}"); ordersWithCustomer.ToList().ForEach(o => Console.WriteLine(o)); Console.WriteLine(); }