Programmatically Setting Control Adapters for URL Rewriting and AJAX

using System;
using System.Collections.Generic;
using System.Text;

namespace CodeKing.Web
{
    public class UrlParser
    {
        public string ParseUrl(Uri requestUrl)
        {
            if (requestUrl.AbsolutePath == "/virtual/sample.aspx")
            {
                return "/default.aspx";
            }
            else
            {
                return null;
            }
        }
    }
}