public void Initialize()
 {
     Items = TickerCollectionHelper.GetItems();
     //Items = Items.Where((i) => (i.BaseCurrency == "USDT" && i.MarketCurrency == "BTC")).ToList();
     Items = Items.Where((i) => i.BaseCurrency == "BTC" || (i.BaseCurrency == "USDT" && i.MarketCurrency == "BTC")).ToList();
 }
 public void Initialize()
 {
     Items = TickerCollectionHelper.GetItems(Exchanges);
     Items = ResizeableArray <TickerCollection> .FromList(Items.Where((i) => i.BaseCurrency == "BTC" || (i.BaseCurrency == "USDT" && i.MarketCurrency == "BTC")).ToList());
 }