Exceptions in error handlers

[Miklos Nemeth]

I'm using your great library, and found that exceptions are not propagated
from
event handlers to the event handler of the procedure that had raised the
event
Here is a small demo of what happens:

' The EventProducer class
Public Event AnEvent()
Public Sub DoSomething()
On Error GoTo exception
RaiseEvent AnEvent
Exit Sub
exception:
MsgBox Err.Description & " from " & Err.Source
End Sub

' The event handler class (ErrorThrower)
Private WithEvents anEventProducer As EventProducer
Private Sub anEventProducer_AnEvent()
Err.Raise 997, "ErrorThrower.anEventProducer_AnEvent", "Exception"
End Sub

The exception 997 never caught by the error handler in DoSomething.
Am I missing something here?

Thank you,
Miklos

[Kelly Ethridge]

Hello Miklos,

VB does not propagate errors up from event handlers back to the event calling RaiseEvent. This is by VB degisn. You have to handle errors within the event procedure or else your application will crash. Using VBCorLib cannot go around this.

Kelly

[Miklos Nemeth]

Thank You, Kelly.
One more question about exception handling:
Is it possible with your great library to display a stack trace when an exception is caught?

Thank you, Miklos