private void HeartBtn_Click(object sender, RoutedEventArgs e)
        {
            bool isReacted = CommentDB.IsReacted(ZComment.CommentId, App.CurrentUser);

            if (isReacted == false)
            {
                ZComment.Heart += 1;
                ZComment.Total += 1;
                CommentDB.UpdateHeart(ZComment.CommentId, ZComment.Heart);
                CommentDB.AddReaction(ZComment.CommentId, App.CurrentUser, "heart");
                this._myReaction.ReactionType = "heart";
            }

            else if (isReacted)
            {
                string currentReaction = CommentDB.GetReaction(ZComment.CommentId, App.CurrentUser);
                if (currentReaction.Equals("like"))
                {
                    ZComment.Like  -= 1;
                    ZComment.Total -= 1;
                    CommentDB.UpdateLike(ZComment.CommentId, ZComment.Like);
                }
                if (currentReaction.Equals("happy"))
                {
                    ZComment.Happy -= 1;
                    ZComment.Total -= 1;
                    CommentDB.UpdateHappy(ZComment.CommentId, ZComment.Happy);
                }
                if (currentReaction.Equals("sad"))
                {
                    ZComment.Sad   -= 1;
                    ZComment.Total -= 1;
                    CommentDB.UpdateSad(ZComment.CommentId, ZComment.Sad);
                }
                if (string.IsNullOrEmpty(currentReaction) || !(currentReaction.Equals("heart")))
                {
                    ZComment.Heart += 1;
                    ZComment.Total += 1;
                    CommentDB.UpdateHeart(ZComment.CommentId, ZComment.Heart);
                    CommentDB.AddReaction(ZComment.CommentId, App.CurrentUser, "heart");
                    this._myReaction.ReactionType = "heart";
                }
            }
            ReactionsPopup.IsOpen = false;
        }