private void Label_MouseDown(object sender, MouseButtonEventArgs e) { if (MessageBox.Show("你确定要清空数据吗?清空后不可恢复!", "提示", MessageBoxButton.YesNo, MessageBoxImage.Question) == MessageBoxResult.Yes) { _isFilterActivated = false; _curJudgeInfoBak.Clear(); ProblemFilter.SelectedIndex = UserFilter.SelectedIndex = TimeFilter.SelectedIndex = -1; Connection.ClearJudgeLog(); _curJudgeInfo.Clear(); Code.Clear(); JudgeDetails.Clear(); CheckBox.IsChecked = false; } }