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.Net > Learn .Net > What are Singleton classes in C sharp?
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What are Singleton classes in C sharp?

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ASP.Net / ASP.Net MVC, C#, SQL server Expert

It is a design pattern which will help you have only single instance of an object throughout the application lifetime.
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Tutor

its one of architures impemented in advanced oops cocept
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Software Developer with 10 + Years of experiencing in Coding and Training.

Singleton pattern is one of the simplest design patterns. This pattern ensures that a class has only one instance and provides a global point of access to it.
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Software Developer with 10 + Years of experiencing in Coding and Training.

eg:using System; class MainApp { static void Main() { // Constructor is protected -- cannot use new Singleton s1 = Singleton.Instance(); Singleton s2 = Singleton.Instance(); if (s1 == s2) { Console.WriteLine("Objects are the same instance"); ...
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eg:using System; class MainApp { static void Main() { // Constructor is protected -- cannot use new Singleton s1 = Singleton.Instance(); Singleton s2 = Singleton.Instance(); if (s1 == s2) { Console.WriteLine("Objects are the same instance"); } // Wait for user Console.Read(); } } // "Singleton" class Singleton { private static Singleton instance; // Note: Constructor is 'protected' protected Singleton() { } public static Singleton Instance() { // Use 'Lazy initialization' if (instance == null) { instance = new Singleton(); } return instance; } } } read less
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A singleton class is a class which can have only one object or instance of itself. The way to achieve it is to restrict the person using the class to create object through its constructor. Hence make the constructor as private. Also have a field variable of its own Type in the in the class. Expose...
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A singleton class is a class which can have only one object or instance of itself. The way to achieve it is to restrict the person using the class to create object through its constructor. Hence make the constructor as private. Also have a field variable of its own Type in the in the class. Expose a public static method which would when called look whether the field variable has been initialized or not. If it is not then create an instance using the private constructor and if it is then return back the already stored object o the field variable. read less
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Thank You for your question Rakesh..... A singleton class has following characteristics A single private construction with no argument A static variable and the singleton class must be declared as sealed. Thank You, Team DishaaPro www.dishaapro.com
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Trainer

A singleton is a class which only allows a single instance of itself to be created, and usually gives simple access to that instance. and that instance is sharing across request.
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Azure.NET, MEAN, GenAI and Devops Trainer 15 years experienced

Singleton Design Pattern - C# Singleton pattern falls under Creational Pattern of Gang of Four (GOF) Design Patterns in .Net. It is pattern is one of the simplest design patterns. This pattern ensures that a class has only one instance
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B.E. Computer

A singleton class is which only allows a single instance of itself to be created, and usually gives access to that instance. Most commonly, singletons don't allow any parameters to be specified when creating the instance.
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Computer Coder/Programmer

You are building an application in C#. You need a class that has only one instance, and you need to provide a global point of access to the instance. You want to be sure that your solution is efficient and that it takes advantage of the Microsoft .NET common language runtime features. You may also want...
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You are building an application in C#. You need a class that has only one instance, and you need to provide a global point of access to the instance. You want to be sure that your solution is efficient and that it takes advantage of the Microsoft .NET common language runtime features. You may also want to make sure that your solution is thread safe. read less
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