Unpredictable Unique Identifier

Question

For an application I am working on, I need to generate a session token which must have following properties:

• it should be unique for the application at least,

Answer 1

How about using what ASP.NET uses to generate unique, unpredictable and secure session ids:

using System;
using System.IO;
using System.Web;
using System.Web.SessionState;

class Program
{
    static void Main()
    {
        var request = new HttpRequest("", "http://localhost", "");
        var response = new HttpResponse(TextWriter.Null);
        var context = new HttpContext(request, response);
        var id = new SessionIDManager().CreateSessionID(context);
        Console.WriteLine(id);
    }
}