Answer Posted / guest

Abstract Factory patterns acts a super-factory which creates
other factories. This pattern is also called as Factory of
factories. In Abstract Factory pattern an interface is
responsible for creating a set of related objects, or
dependent objects without specifying their concrete classes.

public interface AbstractFactory
{
AbstractProductA CreateProductA();

AbstractProductB CreateProductB();
}

public class ConcreteFactoryA : AbstractFactory
{
public AbstractProductA CreateProductA()
{
return new ProductA1();
}

public AbstractProductB CreateProductB()
{
return new ProductB1();
}
}

public class ConcreteFactoryB : AbstractFactory
{
public AbstractProductA CreateProductA()
{
return new ProductA2();
}

public AbstractProductB CreateProductB()
{
return new ProductB2();
}
}

public interface AbstractProductA { }

public class ProductA1 : AbstractProductA { }

public class ProductA2 : AbstractProductA { }

public interface AbstractProductB { }

public class ProductB1 : AbstractProductB { }

public class ProductB2 : AbstractProductB { }

public class Client
{
private AbstractProductA _productA;
private AbstractProductB _productB;

public Client(AbstractFactory factory)
{
_productA = factory.CreateProductA();
_productB = factory.CreateProductB();
}
}

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