tfsdown.cs

public ActionResult Index()
{
    try
    {
        
        var tfs = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(new Uri(_tfs));
        tfs.Connect(ConnectOptions.None);
        ViewBag.Message = "It's just you.";
    }
    catch (Exception)
    {
        ViewBag.Message = "TFS IS DOWN FOR EVERYONE";
    }

    return View();
}