private void StartButton_MouseUp(object sender, MouseButtonEventArgs e) { DoubleAnimation settingsHeightAnimation = new DoubleAnimation(); settingsHeightAnimation.From = SettingsBorder.ActualHeight; settingsHeightAnimation.To = 0; settingsHeightAnimation.Duration = TimeSpan.FromMilliseconds(100); settingsHeightAnimation.AccelerationRatio = 0.3; HideBlacker(); SettingsBorder.BeginAnimation(WidthProperty, settingsHeightAnimation); registrationManager.StopManager(); Thread thread = new Thread(() => { foreach (Player p in Players) { if (p.ButtonIndex == -1) { dbWorker.DeletePlayer(p.PlayerIndex); } else { dbWorker.AddOrUpdatePlayerInfo(p.PlayerIndex, p.Name, p.Points); } } foreach (Player p in Players) { if (p.ButtonIndex == -1) { Extensions.ExcecuteWithAppIdleDispatcher(() => { Players.Remove(p); }); } } }); thread.Start(); if (!isQuizStarted) { quizManager.StartQuiz(); isQuizStarted = true; } this.WindowStyle = WindowStyle.None; this.WindowState = WindowState.Maximized; }