public ActionResult PromptUserForPassword(int id)
        {
            string msg;

            try
            {
                var model = _secretSantaBl.JoinGroupEditModelByGroupId(id);
                return(PartialView("_JoinGroupEntry", model));
            }
            catch (AppException ax)
            {
                msg = ax.Message;
            }
            catch (Exception)
            {
                msg = "An Error Has Occured";
            }
            return(PartialView("_ErrorMessage", new StringModel(msg)));
        }