private void OnTickerSymbolChanged(PropertyChangedEventArgs eventArgs)
{
var args = eventArgs as PropertyValueChangedEventArgs <string>;
var oldValue = args.OldValue;
var newValue = args.NewValue;
if (!string.IsNullOrWhiteSpace(oldValue))
{
clientSocket.cancelMktData(tickerId);
}
tickData = new TickData();
if (!string.IsNullOrWhiteSpace(newValue))
{
tickerId = NumberGenerator.NextRandomInt();
tickerContract = ContractFactory.CreateStockContract(newValue);
clientSocket.reqMktData(tickerId, tickerContract, "", false, null);
}
else
{
tickerId = -1;
tickerContract = null;
}
}
