Types of constructors

[Sathyaish]

What is a private constructor, and why would a class have one? What are
the other kinds of constructors besides:

(1) public constructors; and
(2) parameterized constructors

And I understand that they are not mutually exclusive of one another.
The above classification assimilates my knowledge of having used
constructors in both the above manners.

 

[Alvin Bruney [MVP - ASP.NET]]

private constructors find use in patterns that create only a single instance
of the class - singletons. Have a google for it.

--
Regards,
Alvin Bruney - ASP.NET MVP

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[Francois Bonin [C# MVP]]

-You typically define a private constructor when you do not want a class to
be instanciated by the users of your code.
Your class might be a container for constants or a utility class that only
has static methods.

-Public consructors can indeed be parametrized (the visibility of a
constructor has no incidence on whether it should have parameters or no)
-There also are protected constructors (for example the constructor used in
deserializing an object); static constructors which get called before the
very first instance of a class is used.

HTH