Creational Design Patterns in C#: Building Flexible and Scalable Software

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2025

V. SarcarCreational Design Patterns in C#Apress Pocket Guideshttps://doi.org/10.1007/979-8-8688-1567-6_2

2. Singleton Pattern

Vaskaran Sarcar¹  

(1)

Kolkata, West Bengal, India

 

The Singleton pattern can be implemented in many ways. Each approach has its pros and cons. You’ll see four different approaches in this chapter.

Concept

The Gang of Four (GoF) defined the intent of the Singleton pattern as follows:

Ensure a class only has one instance, and provide a global point of access to it.

Let’s assume you have a class named Sample, and you need to create an object from it. Normally, what would you do? You guessed it right; you can simply use the following line of ...