public IEnumerable <UserViewModel> AssignUser(int roleId, string userName) { var urid = m_userRepository.GetAllUsers() .FirstOrDefault(u => u.EMail.Equals(userName, StringComparison.InvariantCultureIgnoreCase)) .Ensure("Uzivatel neexistuje").Id; m_userRoleRepository.AssignUserToRole(roleId, urid); return(GetRoleMembers(roleId)); }