static void Main(string[] args) { var api = new ExchangeRates("INSERT API ACCESS KEY", false); var response = api.GetExchangeRatesByDateAsync(new DateTime(1999, 01, 04)).Result; Console.WriteLine($"Base: {response.Base}"); Console.WriteLine($"Date: {response.Date}"); Console.WriteLine("Rates:"); Console.WriteLine(string.Join(Environment.NewLine, response.Rates.Select(x => $"Currency: {x.Key} Rate: {x.Value}"))); Console.ReadKey(); }