PrivateConstructorToCreateSingleObject, C#

PrivateConstructorToCreateSingleObject

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            ConstrctorClass constrctorClass1=ConstrctorClass.GetConstrctorClass();
            ConstrctorClass constrctorClass2=ConstrctorClass.GetConstrctorClass();
            ConstrctorClass constrctorClass3=ConstrctorClass.GetConstrctorClass();
            Console.WriteLine("Hello, world!");
        }
    }
    
    public class ConstrctorClass
    {
        public static ConstrctorClass _ConstrctorClass;
        public static ConstrctorClass GetConstrctorClass()
        {
           if(_ConstrctorClass==null)
           {
               _ConstrctorClass=new ConstrctorClass(); 
               Console.WriteLine("New");
           }
           else
           {
               Console.WriteLine("Old");
           }
           return  _ConstrctorClass;
        }
        private ConstrctorClass()
        {
            
        }
        
    }
    
}


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