Application crashes after Application_DispatcherUnhandledException handler called

Question

On launching my WPF application, I try to see if a particular required exe is running or not. If that is not running, I throw InvalidOperationException like this

if (gaInterface.ConnectToGA() != 0)
            throw new InvalidOperationException(Properties.Resources.GAConnectionErrorText);

  private void Application_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
    {
        var exception = e.Exception;
        ShowErrorMessage(exception);
        if (string.CompareOrdinal(exception.Message, FP.Properties.Resources.GAConnectionErrorText) == 0 || (
            !ReferenceEquals(exception.InnerException, null) &&
            string.CompareOrdinal(exception.InnerException.Message, FP.Properties.Resources.GAConnectionErrorText) == 0))
            e.Handled = false;
    }

e.Handled does get set to true, but only in Release mode application crashes after this. What could be the reason here?

What else you expect? You let exception to pass throw, can't you catch the exception and do your work instead? — Rohit Vats, Dec 05 '13 at 06:55
I can't see a line in code where "e.Handled does get set to true". — Somedust, Dec 05 '13 at 07:00

score 1 · Accepted Answer · answered Dec 05 '13 at 08:37

Set e.Handled to true and then shutdown the application.

private void Application_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
{
    var exception = e.Exception;
    ShowErrorMessage(exception);
    if (string.CompareOrdinal(exception.Message, FP.Properties.Resources.GAConnectionErrorText) == 0 || (
        !ReferenceEquals(exception.InnerException, null) &&
        string.CompareOrdinal(exception.InnerException.Message, FP.Properties.Resources.GAConnectionErrorText) == 0))
        {            
             e.Handled = true;
             Application.Current.Shutdown();
        }
}

Application crashes after Application_DispatcherUnhandledException handler called

1 Answers1