AppDomain.CurrentDomain.UnhandledException += AppDomain_UnhandledException;
Application.ThreadException += Application_ThreadException;
Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);

static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
{
    EasyLogger.Error(e.Exception.Message + " Application.ThreadException");
}

static void AppDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
    EasyLogger.Error(((Exception)e.ExceptionObject).Message + " AppDomain.UnhandledException");
}