using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var a = new ClassWithPrivateConstructor(1);

    }

}

​

class ClassWithPrivateConstructor {

    public bool Initialized { get; set; }

    private ClassWithPrivateConstructor(){

        Initialized = true;

    }

    public ClassWithPrivateConstructor(int someValueYouNeed) : this() // Here we call private constructor without parameters. 

        //This can be done to any other constructor

    {

        Console.WriteLine(someValueYouNeed);

        Console.WriteLine(Initialized); // Will output true since constructor has already been called.

    }

}

​

class BestMatchExample {

    public BestMatchExample(string s){

    Console.WriteLine("String match");

    }

    public BestMatchExample(int i){

    Console.WriteLine("int match");

    }

    public BestMatchExample(object s){

    Console.WriteLine("object match");

    }

}