如何在未处理的异常上崩溃

Question

I have created some custom exceptions in a WPF project and I am pretty sure that I am not catching them, when they get thrown, but my application does not crash either. The Exception is logged in the Output Window though.

My custom exceptions derive from System.Exception and I have checked all my try{}catch{} statements if they catch my custom Exception or System.Exception . None of them do that. I am using Visual Studio 2010 and am running it on a 32bit machine, so this seems to be a different problem.

Answer 1

You can add a handler for the AppDomain.UnhandledException event:

AppDomain.CurrentDomain.UnhandledException += App_UnhandledException;

public void App_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
    Exception exception = (Exception)e.ExceptionObject;
    Error error = new Error(exception, mainViewModel.StateManager.CurrentUser);        
    mainViewModel.AddError(error); 
}

Error is a custom class that I use to log errors in the database with. If you put a break point in this method, then execution will jump here whenever there are any uncaught Exception objects that have been thrown.