private async void BlockButton_Click(object sender, RoutedEventArgs e)
        {
            foreach (Button bt in bts)
            {
                bt.Background = Brushes.CadetBlue;
            }

            Button clickButt = sender as Button;

            if (String.Equals(clickButt.Content, enWords[wordIteration]))
            {
                blocks.Children.Remove(clickButt);
                tbs[wordIteration].Text       = enWords[wordIteration].ToString();
                tbs[wordIteration].Visibility = Visibility.Visible;
                wordIteration++;
                if (wordIteration == enWords.Length && correctAnswer)
                {
                    await MyDataBase.ChangeOfferPriority(id, offers[offerIteration].En, -1);

                    foreach (TextBlock tb in tbs)
                    {
                        tb.Background = Brushes.Green;
                    }
                }
            }
            else
            {
                correctAnswer = false; clickButt.Background = Brushes.Red;
            }
        }
            private async void Button_Click(object sender, RoutedEventArgs e)
            {
                await MyDataBase.ChangeOfferPriority(id, enLabel.Text.ToString(), -10);

                ((Button)sender).Background = Brushes.Green;
            }