public async Task PreviewPost()
        {
            IsLoading = true;
            if (string.IsNullOrEmpty(ReplyBox.Text) || _forumReply == null)
            {
                return;
            }
            _forumReply.Message     = ReplyBox.Text;
            PreviewViewModel.IsOpen = true;
            var result = Selected.IsEdit
                ? await _replyManager.CreatePreviewEditPostAsync(_forumReply)
                : await _replyManager.CreatePreviewPostAsync(_forumReply);

            PreviewViewModel.LoadPost(result);
            IsLoading = false;
        }