DESIGN PATTERNS USED IN DOT NET

Design patterns are reusable solutions to common software design problems. They are used to improve the readability, maintainability, and extensibility of code.

There are many different design patterns that can be used in .NET. Some of the most common design patterns used in .NET include:

• Singleton: The singleton pattern ensures that only one instance of a class can exist in an application.
• Factory: The factory pattern creates objects without exposing the instantiation logic to the client.
• Abstract factory: The abstract factory pattern provides an interface for creating families of related objects without specifying their concrete classes.
• Builder: The builder pattern separates the construction of a complex object from its representation.
• Adapter: The adapter pattern converts the interface of one class into an interface that another class expects.
• Facade: The facade pattern provides a simplified interface to a complex system.
• Proxy: The proxy pattern creates a substitute object that acts as a stand-in for a real object.
• Decorator: The decorator pattern dynamically adds new functionality to an object without changing its structure.
• Bridge: The bridge pattern decouples an abstraction from its implementation.
• Flyweight: The flyweight pattern reduces the memory footprint of an application by sharing common data between objects.
• Command: The command pattern encapsulates a request as an object.
• Observer: The observer pattern allows objects to subscribe to and unsubscribe from events.
• State: The state pattern allows an object to change its behavior based on its state.
• Strategy: The strategy pattern allows you to vary the algorithm used to perform a task without affecting the clients of that algorithm.
• Template method: The template method pattern defines the skeleton of an algorithm, deferring some steps to subclasses.
• Visitor: The visitor pattern allows you to separate the algorithm for processing a data structure from the data structure itself.

Design patterns can be used to improve the quality of your code by making it more readable, maintainable, and extensible. They can also help you to solve common software design problems in a consistent and predictable way.

If you are new to design patterns, I recommend starting with the Gang of Four (GoF) patterns. These are the most well-known and widely used design patterns.