What is a singleton?

Refer http://dotnetmagic.blogspot.in/

http://www.c-sharpcorner.com/code/1990/what-is-singleton-design-pattern.aspx

This is helpful http://www.dotnetperls.com/singleton

Singleton is a design pattern that restricts the instantiation of a class to one object. We are achieving this through a static instance variable & private constructor. This is useful when exactly one object is needed to coordinate actions across the system.

single ton is a mechanism in which we can create a single instance(object) of class and this obj is used as a reference when we required another object of class

single ton is a mechanism in which we can create a single instance(object) of class and this obj is used as a reference when we required another object of class

http://www.dotnetperls.com/singleton

singleton is a class which we can create only one instance.

A singleton is a design pattern used when only one instance of an object is created and shared; that is, it only allows one instance of itself to be created. Any attempt to create another instance simply returns a reference to the first one. Singleton classes are created by defining all class constructors as private. In addition, a private static member is created as the same type of the class, along with a public static member that returns an instance of the class. Here is a basic example: public class SingletonExample { private static SingletonExample _Instance; private SingletonExample () { } public static SingletonExample GetInstance() { if (_Instance == null) { _Instance = new SingletonExample (); } return _Instance; } }