Move a folder

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
//add thie namespace
using System.IO;
namespace ConsoleApplication20jan
{
    class Class8
    {
        static void Main()
        {
            string s = "c:\\demo";
            //Note
            //1)s : path of the folder to be moved.

            //2) c:\\dk: path to which the demo folder will bo moved
 
            //3) c:\dk: must be nonexistent when the program is run

            //4) moving is not allowed across different logical drives

            Directory.Move(s, "c:\\dk");
            Console.WriteLine("moved");

        }
    }
}