When to use private constructors?

Private constructors in C# are used in several scenarios to control how instances of a class are created. Here are some common use cases:

1. Singleton Pattern: Ensures that a class has only one instance and provides a global point of access to it. The private constructor prevents other classes from creating new instances.


2. Static Classes: When a class contains only static members, a private constructor prevents instantiation of the class.


3. Factory Methods: When you want to control the creation of instances through factory methods rather than direct instantiation.


4. Restricting Instantiation: To prevent instantiation of a class from outside the class itself, ensuring that objects are only created in a controlled manner.



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