public ActionResult GetAssignedUsers(int qId)
        {
            List <SelectListItem> userItems = new List <SelectListItem>();
            TblUser sessionUser             = (TblUser)Session["UserSession"];

            var Users = userRepository.GetAllUsers(sessionUser.TenantId);

            foreach (var user in Users)
            {
                userItems.Add(new SelectListItem
                {
                    Text  = Convert.ToString(user.FirstName + " " + user.LastName),
                    Value = Convert.ToString(user.UserId)
                });
            }

            List <tblQuizAssignment> lstquizAssignedUsers = new List <tblQuizAssignment>();

            lstquizAssignedUsers = quizRepository.GetQuizAssingedUsers(qId);

            return(Json(lstquizAssignedUsers, JsonRequestBehavior.AllowGet));
        }