singleton-c#

using System;

namespace OOP.Singleton
{
    class Singleton
    {
        // holds the singleton instance
        private static Singleton Instance;
        public string text;

        // private constructor so that Singleton class itself can call itself.
        private Singleton (string text)
        {
            this.text = text;
        }

        public static Singleton GetInstance(string text)
        {
            // checks if instance is created
            if (Instance == null)
            {
                // if note create one
                Instance = new Singleton(text);
            }
            // return the created instance on every subsequent call
            return Instance;
        }
       
    }
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Demonstrates Singleton class. Output of the two print statement bellow will be same");
            Console.WriteLine("because the class returned the cached instance of the second call.");

            Singleton one = Singleton.GetInstance("One");
            Singleton two = Singleton.GetInstance("Two");

            Console.WriteLine(one.text);
            Console.WriteLine(two.text);
        }
    }
}