static void Main(string[] args)
{
Console.WriteLine("Hello World!");
//简单工厂模式，判断逻辑写在了工厂里面，但不符合扩展开放-修改封闭原则
Operarion op1 = SimpleFactory.CreateOperation("+");
op1.NumberA = 1;
op1.NumberB = 2;
double ret1 = op1.GetResult();
Console.WriteLine("简单工厂运算结果是:" + ret1.ToString());
//工厂方法模式,判断逻辑写在了客户端
IFactory factory = new AddFactory();
Operarion op2 = factory.CreateOperation();
op2.NumberA = 3;
op2.NumberB = 2;
double ret2 = op2.GetResult();
Console.WriteLine("工厂方法模式运算结果是：" + ret2);
//抽象工厂模式
Console.ReadKey();
}
public static Operarion CreateOperation(string oper)
{
Operarion operarion = null;
switch (oper)
{
case "+":
operarion = new OperationAdd();
break;
case "-":
operarion = new OperationSub();
break;
case "/":
operarion = new OperationDiv();
break;
default:
break;
}
return(operarion);
}
