C Sharp

Hello,

I have been trying to learn c# from dotnet tutorial and they gave this code which supposed to trigger garbage collector and in turn call the Destructor of the class. however when I run the same code, I get result of Constructor only and not the Destructor.

using System;
namespace DestructorExample
{
    class DestructorDemo
    {
        public DestructorDemo()
        {
            Console.WriteLine("Constructor Object Created");
        }
        ~DestructorDemo()
        {
            string type = GetType().Name;
            Console.WriteLine($"Object {type} is Destroyed");
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            DestructorDemo obj1 = new DestructorDemo();
            DestructorDemo obj2 = new DestructorDemo();

            //Making obj1 for Garbage Collection
            obj1 = null;
            GC.Collect();
            Console.ReadKey();
        }
    }
}

here is the code, if you know please tell me why it's not working