Console Application in Visual Studio to convert a string to uppercase and lowercase

Code:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            string str;

            Console.WriteLine("Please enter a string...");

            str = Console.ReadLine();

            Console.WriteLine("String converted to Uppercase");

            Console.WriteLine(str.ToUpper());

            Console.WriteLine("String converted to Lowercase");

            Console.WriteLine(str.ToLower());

            Console.ReadKey();

        }

    }

}

Output: