private void btnTicker_Click(object sender, RoutedEventArgs e)
{
var x = new BitcoinLib.BlockchainAPI.ExchangeRates();
var c = x.getTickers();
string s = "";
foreach (var item in c.Values.ToList())
{
s += $"symbol: {item.Symbol.PadRight(5)} price 15m: {item.Price15m.ToString().PadRight(10, ' ')} last: {item.Last.ToString().PadRight(10, ' ')} buy: {item.Buy.ToString().PadRight(10, ' ')} sell: {item.Sell.ToString().PadRight(10, ' ')}\r\n";
}
WriteText(s);
}