Design Pattern

Design Pattern (C# / Software Development)

Definition:

  • Reusable solution to common software design problems
  • Not actual code → it's a template / approach
  • Helps structure code in a clean, maintainable way

Purpose

  • Solve recurring design problems
  • Improve code reusability & maintainability
  • Provide standard best practices
  • Reduce code complexity
  • Improve communication between developers

Pros

  • Reusable solutions (no need to reinvent)
  • Cleaner architecture
  • Easier maintenance & scalability
  • Improves readability
  • Follows SOLID principles
  • Helps in large enterprise apps (like .NET Core APIs)

Cons

  • Over-engineering for small apps
  • Increases initial complexity
  • Learning curve (many patterns)
  • Wrong usage can make code worse
  • Adds extra abstraction layers

Types of Design Patterns (C# / .NET)

1. Creational Patterns

Definition:

  • Deal with object creation mechanisms
  • Control how objects are created

Purpose:

  • Encapsulate object creation logic
  • Reduce tight coupling
  • Improve flexibility in object creation

Examples:

  • Singleton
  • Factory
  • Abstract Factory
  • Builder

2. Structural Patterns

Definition:

  • Deal with class & object composition
  • How classes are structured and connected

Purpose:

  • Simplify complex structures
  • Improve code organization
  • Enable flexible relationships between objects

Examples:

  • Adapter
  • Decorator
  • Facade
  • Composite

3. Behavioral Patterns

Definition:

  • Deal with communication between objects
  • Focus on how objects interact

Purpose:

  • Improve communication flow
  • Reduce dependency between objects
  • Make behavior flexible and dynamic

Examples:

  • Strategy
  • Observer
  • Command
  • Mediator

Quick Summary Table

Creational Patterns: These patterns focus on how objects are created. Their main goal is to make object creation more flexible and efficient.

Structural Patterns: These patterns deal with how objects are organized or structured. They help simplify relationships between different parts of a system.

Behavioral Patterns: These patterns focus on how objects interact and communicate with each other. Their goal is to improve communication and responsibility between objects.

Comments

Post a Comment

Popular posts from this blog

Debouncing & Throttling in RxJS: Optimizing API Calls and User Interactions

RxJS Debounce vs Throttle in Angular – Best Practices & Examples What is RxJS — quick primer RxJS (Reactive Extensions for JavaScript) provides Observables and operators to model and manipulate streams of asynchronous events — from keystrokes and HTTP requests to timers and WebSocket messages. 💡 Why this matters: Operators like debounceTime and throttleTime help you control event frequency, reducing wasted CPU and network work while improving UX. 1. Debouncing — emit after silence Debouncing delays emitting a value until a specified period of inactivity. It's best for typeahead inputs where only the final value after the user stops typing is relevant. Live search example (production-ready) // search.component.ts import { Component, OnDestroy } from '@angular/core'; import { FormControl } from '@angular/forms'; import { Subject } from 'rxjs'; import { debounc...
Read more

Csharp Coding - Session

Image
✅ Reverse String Array using System; public class Program { public static void Main() { ReverseStringArray (); } public static void ReverseStringArray() { string[] str = { "priya", "Sai" }; int length = str.Length; for (int i = 0, j = length - 1; i < j; i++, j--) { string temp = str[i]; str[i] = str[j]; str[j] = temp; } Console.WriteLine(string.Join(", ", str)); // Output: Sai, priya } } Output: Sai, priya ✅ Reverse String Array + Each Word using System; public class Program { public static void Main() { ReverseStringArray(); } public static void ReverseStringArray() { string[] str = { "priya", "Sai" }; // Step 1: Reverse the array string[] reversedArray = ReverseArray (str); // Step 2: Reverse e...
Read more

Comprehensive Guide to C# and .NET Core OOP Concepts and Language Features

Comprehensive Guide to C# and .NET Core OOP Concepts Class A class is a blueprint for creating objects that encapsulate both data and behavior. Access Modifiers : public, internal, abstract, sealed control visibility and inheritance. Static Classes : Cannot be instantiated, contain only static members. Partial Classes : Split across files using partial keyword for better organization. public class Car { public string Model; public void Drive() => Console.WriteLine($"{Model} is driving."); } Analogy: A car blueprint used to build many actual cars. Benefits: Reusability, Encapsulation, Abstraction, Inheritance Object An object is an instance of a class. Managed by Garbage Collector for automatic memory cleanup. Boxing/Unboxing allows value types to be treated a...
Read more