using System;

using System.Collections;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        bool doesContain;

        object expected;

        List<object> actual;

        expected = 300;

        actual = new List<object> { 100, 200, 300 };

        doesContain = actual.Contains(expected);

        loopThroughAndPrint(actual, expected, doesContain);

        Console.WriteLine(string.Empty);    

        expected = "apple";

        actual = new List<object> { "apple", "pineapple", "pear" };

        doesContain = actual.Contains(expected);

        loopThroughAndPrint(actual, expected, doesContain);

        Console.WriteLine(string.Empty);    

        expected = "llama";

        actual = new List<object> { "apple", "pineapple", "pear" };

        doesContain = actual.Contains(expected);

        loopThroughAndPrint(actual, expected, doesContain);

        void loopThroughAndPrint(List<object> actual, object expected, bool doesContain){

            Console.WriteLine($"DoesContain: {doesContain}");

            foreach(object obj in actual)

            {           

                bool equalsMetod = expected.Equals(obj);

                Console.WriteLine($"expected.Equals(obj) : {equalsMetod}, obj: {obj}, expected: {expected}");           

            }

        }

    }

}