/// <summary>
/// Constructor.
/// </summary>
internal BackgroundTaskTerminatedEventArgs(object userState, BackgroundTaskTerminatedReason reason, object[] results, Exception ex)
{
_userState = userState;
_reason = reason;
_results = results;
_exception = ex;
}
private void BackgroundWorkerRunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
// if there was an unhandled exception in the worker thread, then e.Error will be non-null
// if there was a handled exception in the worker thread, and the worker passed it back, _error will be non-null
// therefore, coalesce the results, giving precedence to the unhandled exception
_error = e.Error ?? _error;
// determine the reason
BackgroundTaskTerminatedReason reason = (_error != null) ? BackgroundTaskTerminatedReason.Exception
: (e.Cancelled ? BackgroundTaskTerminatedReason.Cancelled : BackgroundTaskTerminatedReason.Completed);
// the e.Result object is an exception for e.Cancelled status, we don't want that
object[] results = (e.Cancelled ? null : (object[])e.Result);
EventsHelper.Fire(_terminated, this,
new BackgroundTaskTerminatedEventArgs(_userState, reason, results, _error));
}
/// <summary>
/// Constructor.
/// </summary>
internal BackgroundTaskTerminatedEventArgs(object userState, BackgroundTaskTerminatedReason reason, object[] results, Exception ex)
{
_userState = userState;
_reason = reason;
_results = results;
_exception = ex;
}