what is destructor in c# net with example ?

Destructor  is special methods that are used to release the instance of a class from memory. A class can have only one destructor, A destructor has the same name as its class but is prefixed with a ~ (tilde)

For example:-

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace destructors

{

    class calculator

    {

        static int num1, numr2, total;

        public void add()

        {

            total = num1 + num2;

            Console.WriteLine("the result is {0}", total);

        }

        calculator()

        {

            num1 = 20;

            numr2 = 30;

            total = 0;

            Console.WriteLine("constructor invoked");

        }

        ~calculator()

        {

            Console.WriteLine("destructor invoked");

        }

        static void Main(string[] args)

        {

            calculator cl = new calculator();

            cl.addnum();

            Console.ReadLine();

        }

    }

}