What is factory method pattern in C#?

What is factory method pattern in C#?

Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes. Factory Method defines a method, which should be used for creating objects instead of direct constructor call ( new operator).

What is Factory pattern with example?

A Factory Pattern or Factory Method Pattern says that just define an interface or abstract class for creating an object but let the subclasses decide which class to instantiate. In other words, subclasses are responsible to create the instance of the class.

What is factory design pattern with real time example?

The Factory Design Pattern is a commonly used design pattern where we need to create Loosely Coupled System. Basically, it comes under Creational Pattern and it is used to create instance and reuse it. Factory Pattern is based on real time factory concept.

How do you write a factory design pattern?

Design Pattern – Factory Pattern

1. Implementation.
2. Create an interface.
3. Create concrete classes implementing the same interface.
4. Create a Factory to generate object of concrete class based on given information.
5. Use the Factory to get object of concrete class by passing an information such as type.
6. Verify the output.

Why is factory pattern used?

The Factory Method pattern is generally used in the following situations: A class cannot anticipate the type of objects it needs to create beforehand. A class requires its subclasses to specify the objects it creates. You want to localize the logic to instantiate a complex object.

What is the difference between Factory method and abstract factory?

The main difference between a “factory method” and an “abstract factory” is that the factory method is a single method, and an abstract factory is an object. The factory method is just a method, it can be overridden in a subclass, whereas the abstract factory is an object that has multiple factory methods on it.

When should we use factory pattern?

The factory design pattern is used when we have a superclass with multiple sub-classes and based on input, we need to return one of the sub-class. This pattern takes out the responsibility of the instantiation of a class from the client program to the factory class.

Why do we use factory patterns?

Advantage of Factory Design Pattern Factory Method Pattern allows the sub-classes to choose the type of objects to create. It promotes the loose-coupling by eliminating the need to bind application-specific classes into the code.

Where is factory design pattern used?

What are the types of factory pattern?

the abstract factory pattern, the static factory method, the simple factory (also called factory).

Is Factory Pattern a dependency injection?

Factory pattern can be called as a tool to implement DI. Dependency injection can be implemented in many ways like DI using constructors, using mapping xml files etc. That’s true that Factory Pattern is one of the way implementing Dependency Injection.