如何在c#中创建类似于模式的模型？

public interface IProduct
{
    void Use();
}

public class ConcreteProductA : IProduct
{
    public void Use()
    {
        Console.WriteLine("Using ConcreteProductA");
    }
}

public class ConcreteProductB : IProduct
{
    public void Use()
    {
        Console.WriteLine("Using ConcreteProductB");
    }
}

public class ProductFactory
{
    public static IProduct CreateProduct(string type)
    {
        switch (type)
        {
            case "A":
                return new ConcreteProductA();
            case "B":
                return new ConcreteProductB();
            default:
                throw new ArgumentException("Invalid product type");
        }
    }
}

class Program
{
    static void Main(string[] args)
    {
        IProduct productA = ProductFactory.CreateProduct("A");
        productA.Use(); // Output: Using ConcreteProductA

        IProduct productB = ProductFactory.CreateProduct("B");
        productB.Use(); // Output: Using ConcreteProductB
    }
}

public class ProductFactory
{
    public static IProduct CreateProduct(string type)
    {
        Type productType = Type.GetType($"Namespace.ConcreteProduct{type}");
        if (productType == null)
        {
            throw new ArgumentException("Invalid product type");
        }
        return (IProduct)Activator.CreateInstance(productType);
    }
}

public class ProductRegistry
{
    private readonly Dictionary<string, Type> _registry = new Dictionary<string, Type>();

    public void Register(string type, Type productType)
    {
        _registry[type] = productType;
    }

    public IProduct CreateProduct(string type)
    {
        if (_registry.TryGetValue(type, out Type productType))
        {
            return (IProduct)Activator.CreateInstance(productType);
        }
        throw new ArgumentException("Invalid product type");
    }
}