IsValid() public static method

public static IsValid ( string symbol ) : bool
symbol string
return bool
Symbols Class Documentation
Exemplo n.º 1
0
        private static async Task <ExchangeRate> GetRateAsync(string apiKey, string from, string to, DateTime?date = null)
        {
            from = from.ToUpper();
            to   = to.ToUpper();

            if (!Symbols.IsValid(from))
            {
                throw new ArgumentException("Symbol not found for provided currency", "from");
            }

            if (!Symbols.IsValid(to))
            {
                throw new ArgumentException("Symbol not found for provided currency", "to");
            }

            var url = GetFixerUrl(apiKey, date);

            using (var client = new HttpClient())
            {
                var response = await client.GetAsync(url);

                response.EnsureSuccessStatusCode();

                return(ParseData(await response.Content.ReadAsStringAsync(), from, to));
            }
        }
Exemplo n.º 2
0
        private static ExchangeRate GetRate(string from, string to, DateTime?date = null)
        {
            from = from.ToUpper();
            to   = to.ToUpper();

            if (!Symbols.IsValid(from))
            {
                throw new ArgumentException("Symbol not found for provided currency", "from");
            }

            if (!Symbols.IsValid(to))
            {
                throw new ArgumentException("Symbol not found for provided currency", "to");
            }

            var rates = GetLatestRates(date);

            var fromRate = rates.Value <double>(from);
            var toRate   = rates.Value <double>(to);

            var rate = toRate / fromRate;

            return(new ExchangeRate(from, to, rate));
        }