WPF 捕捉全局异常
参考:https://www.cnblogs.com/snow-zhang/p/10107108.html
写在App.xaml.cs中
void App_OnStartup(object sender, StartupEventArgs e) { //UI线程未捕获异常处理事件 this.DispatcherUnhandledException += new DispatcherUnhandledExceptionEventHandler(App_DispatcherUnhandledException); //Task线程内未捕获异常处理事件 TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException; // 非UI线程未捕获异常处理事件 AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException); } void App_Exit(object sender, ExitEventArgs e) { // 程序退出时需要处理的业务 } void App_DispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e) { try { e.Handled = true; //把 Handled 属性设为true,表示此异常已处理,程序可以继续运行,不会强制退出 MessageBox.Show("UI线程异常:" + e.Exception.Message); } catch (Exception ex) { //此时程序出现严重异常,将强制结束退出 MessageBox.Show("UI线程发生致命错误!"); } } void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e) { StringBuilder sbEx = new StringBuilder(); if (e.IsTerminating) { sbEx.Append("非UI线程发生致命错误"); } sbEx.Append("非UI线程异常:"); if (e.ExceptionObject is Exception) { sbEx.Append(((Exception)e.ExceptionObject).Message); } else { sbEx.Append(e.ExceptionObject); } MessageBox.Show(sbEx.ToString()); } void TaskScheduler_UnobservedTaskException(object sender, UnobservedTaskExceptionEventArgs e) { //task线程内未处理捕获 MessageBox.Show("Task线程异常:" + e.Exception.Message); e.SetObserved();//设置该异常已察觉(这样处理后就不会引起程序崩溃) }
完善一下
private void App_OnStartup(object sender, StartupEventArgs e) { InitExceptionHandle(); } public static void Close(int exitCode = 0) { Environment.Exit(exitCode); } private static void OnUnhandledException(Exception e) { App.Current.Dispatcher.Invoke(() => { lock (App.Current) { System.Console.WriteLine("Exception #{0}", e); // App.Close(); } }); } private void InitExceptionHandle() { this.DispatcherUnhandledException += (o, args) => { args.Handled = true; OnUnhandledException(args.Exception); }; TaskScheduler.UnobservedTaskException += (o, args) => { OnUnhandledException(args.Exception); }; AppDomain.CurrentDomain.UnhandledException += (o, args) => { if (args.ExceptionObject is Exception e) { OnUnhandledException(e); } else { System.Console.WriteLine("Exception #{0}", args.ExceptionObject); } }; }