public ActionResult RemoveFriend(RemoveFriendViewModel viewModel)
        {
            var    userId = User.Identity.GetUserId();
            Member member = db.Members.FirstOrDefault(m => m.ApplicationUserId == userId);

            db.FriendPairs.Remove(db.FriendPairs.FirstOrDefault(p => p.FriendId == viewModel.Friend.Id && p.ListId == member.Id));
            db.SaveChanges();
            return(RedirectToAction("Index"));
        }
        public ActionResult RemoveFriend(Guid id)
        {
            RemoveFriendViewModel viewModel = new RemoveFriendViewModel
            {
                Friend = db.Members.Find(id)
            };

            return(View(viewModel));
        }