public void Sell(string Symbol, decimal Shares)
{
lock (_updateStockPricesLock)
{
if (!_updatingStockPrices)
{
_updatingStockPrices = true;
if (MarketState == MarketState.Open)
{
Stock thisStock = null;
foreach (var stock in _stocks.Values)
{
if (stock.Symbol.Equals(Symbol, StringComparison.Ordinal))
{
thisStock = stock;
}
}
Account thisAccount = null;
foreach (var account in _account.Values)
{
thisAccount = account;
}
var positionValue = thisStock.Price * Shares;
if (positionValue <= thisAccount.Balance)
{
var transactionNumber = GetLastTransactionNumber() + 1;
var negativeShares = Shares * -1;
var positionValueNegative = positionValue * -1;
var order = new Transaction { TransactionNumber = transactionNumber, Symbol = thisStock.Symbol, Price = thisStock.Price, Shares = negativeShares, BuyOrSell = "Sell", TimeStamp = DateTime.Now.ToString(@"MM\/dd\/yyyy h\:mm tt"), PositionValue = positionValueNegative };
_transactions.TryAdd(order.TransactionNumber, order);
thisAccount.Balance = thisAccount.Balance - positionValue;
thisAccount.ShortExposure += positionValue;
_account.AddOrUpdate(thisAccount.BrokerID, thisAccount, (key, oldValue) => thisAccount);
}
else
{
Clients.All.alertInsufficientBalance();
}
}
else
{
Clients.All.alertMarketClosed();
}
_updatingStockPrices = false;
}
}
}
private void BroadcastTransaction(Transaction transaction)
{
Clients.All.updateTransaction(transaction);
}