kindOfRefreshConsoleValue

// Declare an object called timer and the integer.
private static Timer timer;
private static int i = 0;

static void Main(string[] args)
{
    // Set the timer to be a new Timer with an interval of 2 seconds.
    timer = new Timer(2000);
    // Everytime that interval has been reached, fire off this event.
    timer.Elapsed += OnTimedEvent;
    // The timer is now enabled and will start printing stuff.
    timer.Enabled = true;

    // Print the "first" value
    Console.Write("{0}", i);

    // This one waits for user input, as long as none is given, the progam will go on forever.
    // (I.E. a key is not pressed)
    Console.ReadKey();
    // Will just flash by as the program will be closing.
    Console.WriteLine("Terminating the application...");
}

private static void OnTimedEvent(Object source, ElapsedEventArgs e)
{
    // Increment the integer
    i++;
    // \r makes the console go back all the way on the row,
    // and {0} prints out whatever the first value is on the other side of the comma (which in this case is the integer i).
    Console.Write("\r{0}", i);
}