private void LoadData()
        {
            Task.Factory.StartNew(() => {
                CommentsList.Clear();

                List <Comment> comments = _dr.GetCommentsByPostId(post.Id);


                foreach (Comment c in comments)
                {
                    CommentsList.Add(c);
                }
            }).ContinueWith(task => {
                activityIndicator.IsRunning = false;
                activityIndicator.IsVisible = false;
            }, TaskScheduler.FromCurrentSynchronizationContext());
        }