12306网站开发成本,建设工程公司组织架构图,asp网站免费模板,苏州网站建设设计公司哪家好命令模式#xff08;Command Pattern#xff09;
命令模式是一种数据驱动的设计模式#xff0c;属于行为型模式类别。请求被包装在一个对象中作为命令#xff0c;并传递给调用对象。调用对象寻找可以处理该命令的合适对象#xff0c;并将命令传递给相应的对象#xff0c…命令模式Command Pattern
命令模式是一种数据驱动的设计模式属于行为型模式类别。请求被包装在一个对象中作为命令并传递给调用对象。调用对象寻找可以处理该命令的合适对象并将命令传递给相应的对象该对象执行命令。
实现 步骤 1创建一个命令接口。 public interface IOrder {void Execute();
} 步骤 2创建一个请求类。
public class Stock {private string name ABC;private int quantity 10;public void Buy(){Console.WriteLine($Stock [ Name: {name}, Quantity: {quantity} ] bought);}public void Sell(){Console.WriteLine($Stock [ Name: {name}, Quantity: {quantity} ] sold);}
}
步骤 3创建实现 IOrder 接口的具体类。
public class BuyStock : IOrder {private Stock abcStock;public BuyStock(Stock abcStock){this.abcStock abcStock;}public void Execute() {abcStock.Buy();}
}public class SellStock : IOrder {private Stock abcStock;public SellStock(Stock abcStock){this.abcStock abcStock;}public void Execute() {abcStock.Sell();}
}
步骤 4创建命令调用类。
public class Broker {private ListIOrder orderList new ListIOrder(); public void TakeOrder(IOrder order){orderList.Add(order); }public void PlaceOrders(){foreach (IOrder order in orderList) {order.Execute();}orderList.Clear();}
}
步骤 5使用 Broker 类接受并执行命令。
public class CommandPatternDemo {public static void Main(string[] args) {Stock abcStock new Stock();BuyStock buyStockOrder new BuyStock(abcStock);SellStock sellStockOrder new SellStock(abcStock);Broker broker new Broker();broker.TakeOrder(buyStockOrder);broker.TakeOrder(sellStockOrder);broker.PlaceOrders();}
}
步骤 6验证输出。
Stock [ Name: ABC, Quantity: 10 ] bought
Stock [ Name: ABC, Quantity: 10 ] sold
