private void Active_Click(object Sender, RoutedEventArgs E) { if (!CurrentRoom.HasJoined(App.CurrentUser.Id) || App.CurrentUser.Id != CurrentRoom.Host.Id) { MessageBox.Show("您当前没有加入任何一个角色槽,也不是该房间的房主,故无法发出准备就绪之命令。", "准备就绪?", MessageBoxButton.OK, MessageBoxImage.Information); return; } ActiveButton.Content = "等待中..."; ActiveButton.IsEnabled = false; ActiveButton.ToolTip = "正等待所有加入角色槽的玩家准备就绪。"; foreach (var TempGroupItem in GroupStack.Children.OfType <Components.GroupItem>()) { foreach (var ParticipantItem in TempGroupItem.ParticipantStack.Children.OfType <ParticipantItem>()) { if (ParticipantItem.Participant != null && ParticipantItem.Participant.Id == App.CurrentUser.Id) { ParticipantItem.Ready(); } } } DispatcherTimer Timer = new DispatcherTimer() { Interval = TimeSpan.FromSeconds(0.35) }; Timer.Tick += delegate { ActiveButton.Foreground = new SolidColorBrush(Color.FromRgb(173, 173, 173)); Timer.Stop(); }; Timer.Start(); }