wpf当中 捕捉全局异常

AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
DispatcherUnhandledException += App_DispatcherUnhandledException;
TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;

 private void TaskScheduler_UnobservedTaskException(object sender, UnobservedTaskExceptionEventArgs ex)
 {
     //MessageBox.Show("Task线程异常：" + ex.me, "错误", MessageBoxButton.OK, MessageBoxImage.Error);
     设置该异常已察觉（这样处理后就不会引起程序崩溃）
     ex.SetObserved();


 }

 private void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
 {
     e.Handled = true;
     MessageBox.Show("发生错误：" + e.Exception.Message, "错误", MessageBoxButton.OK, MessageBoxImage.Error);

 }

 private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
 {
     Exception ex = (Exception)e.ExceptionObject;
     MessageBox.Show("发生错误：" + ex.Message, "错误", MessageBoxButton.OK, MessageBoxImage.Error);
 }