重构C#代码以实现某种工厂设计模式

// 定义抽象产品接口
public interface IProduct
{
    void DoSomething();
}

// 创建具体产品类
public class ConcreteProductA : IProduct
{
    public void DoSomething()
    {
        Console.WriteLine("ConcreteProductA is doing something.");
    }
}

public class ConcreteProductB : IProduct
{
    public void DoSomething()
    {
        Console.WriteLine("ConcreteProductB is doing something.");
    }
}

// 定义抽象工厂接口
public interface IFactory
{
    IProduct CreateProduct();
}

// 创建具体工厂类
public class ConcreteFactoryA : IFactory
{
    public IProduct CreateProduct()
    {
        return new ConcreteProductA();
    }
}

public class ConcreteFactoryB : IFactory
{
    public IProduct CreateProduct()
    {
        return new ConcreteProductB();
    }
}

// 客户端代码
public class Client
{
    private IFactory factory;

    public Client(IFactory factory)
    {
        this.factory = factory;
    }

    public void DoSomething()
    {
        IProduct product = factory.CreateProduct();
        product.DoSomething();
    }
}

// 使用示例
public static void Main(string[] args)
{
    IFactory factory = new ConcreteFactoryA();
    Client client = new Client(factory);
    client.DoSomething();
}