private void Start() { _chartService.SetUpChart(); _loadedCurrencies = _loader.ReadFile(); var minDate = _loadedCurrencies.Select(x => x.CurrencyInfo.Min(y => y.Date)).Min(); var maxDate = _loadedCurrencies.Select(x => x.CurrencyInfo.Max(y => y.Date)).Max(); dateTimePicker_StartTime.MinDate = minDate; dateTimePicker_StartTime.MaxDate = maxDate; var currencyNames = _loadedCurrencies.Select(x => x.Name).ToArray(); comboBox_Currencies.Items.AddRange(currencyNames); }