Catching unhandled exceptions

static void Main()
{
    Application.EnableVisualStyles();
    Application.SetCompatibleTextRenderingDefault(false);
    Application.ThreadException += new ThreadExceptionEventHandler(Application_ThreadException);
    AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
    Application.Run(new Form1());
}

static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
{
    MessageBox.Show(e.Exception.Message, "Unhandled Thread Exception");
    // here you can log the exception ...
}

static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
    MessageBox.Show((e.ExceptionObject as Exception).Message, "Unhandled UI Exception");
    // here you can log the exception ...
}