public async Task <string> GetRateAsync(string selectedBase, string selectedQuote, DateTime date)
{
if (selectedBase == selectedQuote)
{
return("1");
}
else
{
string baseCurrency;
string quoteCurrency;
try
{
baseCurrency = new string((selectedBase.ToString().Substring(selectedBase.Length - 4, 3).ToArray()));
quoteCurrency = new string((selectedQuote.Substring(selectedQuote.Length - 4, 3).ToArray()));
}
catch
{
throw new Exception("Invalid currencies names");
}
var model = await _apiHelper.GetRateFromAPIAsync(baseCurrency, quoteCurrency, date.ToString("yyyy-MM-dd"));
var info = new NumberFormatInfo();
info.NumberDecimalSeparator = ".";
return((model.Rates.First().Value).ToString(info));
}
}
public async Task <decimal> GetRateAsync(string selectedBase, string selectedQuote, DateTime date)
{
string baseCurrency;
string quoteCurrency;
try
{
baseCurrency = new string((selectedBase.ToString().Substring(selectedBase.Length - 4, 3).ToArray()));
quoteCurrency = new string((selectedQuote.Substring(selectedQuote.Length - 4, 3).ToArray()));
}
catch
{
throw new Exception("Invalid currencies names");
}
var model = await _apiHelper.GetRateFromAPIAsync(baseCurrency, quoteCurrency, date.ToString("yyyy-MM-dd"));
return(model.Rates.First().Value);
}