Problem in Assigning one object to other object

Question

Hi
i am trying to assign one object to other object but it is assigning and showing me this error can any one help me...?

Error1Cannot implicitly convert type 'DMLOperationOnArray.Test2' to 'DMLOperationOnArray.Test'D:\c# Prectice\DMLOperationOnArray\DMLOperationOnArray\Program.cs7017DMLOperationOnArray

using System;

namespace DMLOperationOnArray

{

    class Program

    {

        static void Main(string[] args)

        {

         Test t = new Test();

            t.Testmethod();

            Console.Write("\n\n\n");

            Test2 t2 = new Test2();

            t2.Testmethod2();

            t = t2; // error occured here

            Console.ReadKey();

        }

    }

    class Test

    {

        

        public void Testmethod()

        {

            int value = 20;

            Console.WriteLine(value);

        }

    }

    class Test2

    {

        public void Testmethod2()

        {

            int value = 40;

            Console.WriteLine(value);

        }

    }

}