public enum OrderType { Buy, Sell, Limit, Market, StopLoss, TakeProfit } public void PlaceOrder(string symbol, decimal quantity, decimal price, OrderType orderType) { switch (orderType) { case OrderType.Buy: // Place a buy order for the specified symbol and quantity at the specified price break; case OrderType.Sell: // Place a sell order for the specified symbol and quantity at the specified price break; case OrderType.Limit: // Place a limit order for the specified symbol and quantity at the specified price break; case OrderType.Market: // Place a market order for the specified symbol and quantity break; case OrderType.StopLoss: // Place a stop loss order for the specified symbol and quantity at the specified price break; case OrderType.TakeProfit: // Place a take profit order for the specified symbol and quantity at the specified price break; } }These code examples demonstrate how OrderType can be used in a trading or financial application to place different types of orders. The package library for OrderType would likely be a trading or financial library, such as the Interactive Brokers or TD Ameritrade API libraries.