Get Firefox URL?

using NDde.Client;

class Test
{
        public static string GetFirefoxURL()
        {
            DdeClient dde = new DdeClient("Firefox", "WWW_GetWindowInfo");
            dde.Connect();
            string url = dde.Request("URL", int.MaxValue);
            dde.Disconnect();
            return url;
        }
}

"http://stackoverflow.com/questions/430614/get-firefox-url","Get Firefox URL? - Stack Overflow",""