ICoreApplicationUnhandledError.UnhandledErrorDetected Event

Definition

Namespace:

Windows.ApplicationModel.Core

Occurs when there is an error in an async completion handler, or an event handler, that wasn't otherwise handled by system or app code.

// Register
event_token UnhandledErrorDetected(EventHandler<UnhandledErrorDetectedEventArgs> const& handler) const;

// Revoke with event_token
void UnhandledErrorDetected(event_token const* cookie) const;

// Revoke with event_revoker
ICoreApplicationUnhandledError::UnhandledErrorDetected_revoker UnhandledErrorDetected(auto_revoke_t, EventHandler<UnhandledErrorDetectedEventArgs> const& handler) const;

event System.EventHandler<UnhandledErrorDetectedEventArgs> UnhandledErrorDetected;

function onUnhandledErrorDetected(eventArgs) { /* Your code */ }
iCoreApplicationUnhandledError.addEventListener("unhandlederrordetected", onUnhandledErrorDetected);
iCoreApplicationUnhandledError.removeEventListener("unhandlederrordetected", onUnhandledErrorDetected);
- or -
iCoreApplicationUnhandledError.onunhandlederrordetected = onUnhandledErrorDetected;

Event UnhandledErrorDetected As EventHandler(Of UnhandledErrorDetectedEventArgs) 

Event Type

EventHandler<UnhandledErrorDetectedEventArgs>

EventHandler<UnhandledErrorDetectedEventArgs>

Remarks

This event is raised whenever there is an error in an async completion or event handler that reaches top of stack without being handled by system or app code. Your app can inspect the error and choose whether to mark the error as handled (using the Handled property in event data). If the error is marked Handled, execution will continue. If the error is not marked Handled, the process will be terminated.

Windows::ApplicationModel::Core::CoreApplication::UnhandledErrorDetected([](auto&&, auto&& args)
{
    if (!args.UnhandledError().Handled())
    {
        try
        {
            // Take the failure HRESULT and wrap it in a language specific exception.
            args.UnhandledError().Propagate();
        }
        catch (winrt::hresult_error const& e)
        {
            MyLogger::Log(e.message());
            // Since UnhandledError.Propagate marks the error as Handled, rethrow in order to only Log and not Handle.
            throw e;
        }
    }
});

CoreApplication::UnhandledErrorDetected += ref new EventHandler<UnhandledErrorDetectedEventArgs^ >(
    [](Platform::Object^ sender, UnhandledErrorDetectedEventArgs^ ea) ->
{
    if (!ea->UnhandledError->Handled)
    {
        try
        {
            // Take the failure HRESULT and wrap it in a language specific exception
            ea->UnhandledError->Propagate();
        }
        catch (Platform::Exception^ e)
        {
            MyLogger::Log(e->Message);
            // Since UnhandledError.Propagate marks the error as Handled, rethrow in order to only Log and not Handle
            throw e;
        }
    }
});

See also

• UnhandledException