How can I set up .NET UnhandledException handling in a Windows service?

The reason that the UnhandledException event on the current AppDomain does not fire is how services are executed. User sends a Start command from the Windows Service Control Manager (SCM). The command is received by the framework’s ServiceBase implementation and dispatched to the OnStart method. The OnStart method is called. Any exception which is thrown … Read more

Why is “throws Exception” necessary when calling a function?

In Java, as you may know, exceptions can be categorized into two: One that needs the throws clause or must be handled if you don’t specify one and another one that doesn’t. Now, see the following figure: In Java, you can throw anything that extends the Throwable class. However, you don’t need to specify a … Read more

Unhandled exceptions in BackgroundWorker

What you’re describing is not the defined behavior of BackgroundWorker. You’re doing something wrong, I suspect. Here’s a little sample that proves BackgroundWorker eats exceptions in DoWork, and makes them available to you in RunWorkerCompleted: var worker = new BackgroundWorker(); worker.DoWork += (sender, e) => { throw new InvalidOperationException(“oh shiznit!”); }; worker.RunWorkerCompleted += (sender, e) … Read more

catch all unhandled exceptions in ASP.NET Web Api

This is now possible with WebAPI 2.1 (see the What’s New): Create one or more implementations of IExceptionLogger. For example: public class TraceExceptionLogger : ExceptionLogger { public override void Log(ExceptionLoggerContext context) { Trace.TraceError(context.ExceptionContext.Exception.ToString()); } } Then register with your application’s HttpConfiguration, inside a config callback like so: config.Services.Add(typeof(IExceptionLogger), new TraceExceptionLogger()); or directly: GlobalConfiguration.Configuration.Services.Add(typeof(IExceptionLogger), new TraceExceptionLogger());

Java 8: How do I work with exception throwing methods in streams?

You need to wrap your method call into another one, where you do not throw checked exceptions. You can still throw anything that is a subclass of RuntimeException. A normal wrapping idiom is something like: private void safeFoo(final A a) { try { a.foo(); } catch (Exception ex) { throw new RuntimeException(ex); } } (Supertype … Read more

CryptographicException: Padding is invalid and cannot be removed and Validation of viewstate MAC failed

First of all lets start from the fact, that this error of view state happens on PostBack. Also I must say that I have done all the things that every one suggest to do to avoid this problem. And I have single machine, but 2 pools that run the same Pages. So someone do an … Read more

How can I make something that catches all ‘unhandled’ exceptions in a WinForms application?

Take a look at the example from the ThreadException documentation: public static void Main(string[] args) { // Add the event handler for handling UI thread exceptions to the event. Application.ThreadException += new ThreadExceptionEventHandler(ErrorHandlerForm.Form1_UIThreadException); // Set the unhandled exception mode to force all Windows Forms errors // to go through our handler. Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException); // Add the … Read more