using YLErp.Abstract.DataProviders; namespace YLErp.Helpers { class InnerExchangeOptionPriceProvider : IPriceProvider { public double GetPrice(string instrumentCode) { return TryGetPrice(instrumentCode, out var price) ? price : 0; } public bool TryGetPrice(string instrumentCode, out double price) { switch (instrumentCode) { case "RB00-C-3400": price = 30; return true; case "RB00-P-3400": price = 20; return true; default: price = 0; return false; } } } }