public async Task <IActionResult> UpdateOptions([Bind("Expiry,UnderlyingPrice")] UpdateOptionsModel updateOptionsModel)
{
if (ModelState.IsValid)
{
TradingAccount tradingAccount = _context.TradingAccounts.First();
Decimal spread;
foreach (Option option in await _context.Options.ToListAsync())
{
option.Expiry = updateOptionsModel.Expiry;
option.UnderlyingPrice = updateOptionsModel.UnderlyingPrice;
option.BlackScholesPrice = option.CalculateBlackScholesPrice(tradingAccount, updateOptionsModel.UnderlyingPrice);
spread = option.Spread;
option.Bid = option.BlackScholesPrice - (spread / 2m);
option.Ask = option.BlackScholesPrice + (spread / 2m);
option.FillCalculatedFields(tradingAccount);
}
_context.SaveChanges();
return(RedirectToAction("Index", "Home"));
}
return(View(updateOptionsModel));
}
public void GetUpdateOptions(DateTime newExpiry, Decimal newUnderlyingPrice)
{
TradingAccount tradingAccount = _context.TradingAccounts.First();
Decimal spread;
foreach (Option option in _context.Options.ToList())
{
option.Expiry = newExpiry;
option.UnderlyingPrice = newUnderlyingPrice;
option.BlackScholesPrice = option.CalculateBlackScholesPrice(tradingAccount, newUnderlyingPrice);
spread = option.Spread;
option.Bid = option.BlackScholesPrice - (spread / 2m);
option.Ask = option.BlackScholesPrice + (spread / 2m);
option.FillCalculatedFields(tradingAccount);
}
_context.SaveChanges();
}