Is it possible to check if there is a handler registered for one of my events?

[Andreas =?ISO-8859-1?Q?M=FCller?=]

Hi,

I have a class that provides an event.

Class Test
Public Event MyEvent(ByVal iExpensiveParameter As Integer)
End Class

The problem is, that when the event is raised, a lot of expensive
computation has to be done to calculate the parameter of the event. So I
only would like to do that, if anybody has registered a handler for this
event. Is it possible to find that out?
Thanks in advance,
Andy

 

[Armin Zingler]

I have a class that provides an event.

Class Test
Public Event MyEvent(ByVal iExpensiveParameter As Integer)
End Class

The problem is, that when the event is raised, a lot of expensive
computation has to be done to calculate the parameter of the event. So I
only would like to do that, if anybody has registered a handler for this
event. Is it possible to find that out?

If Not MyEventEvent Is Nothing Then
'expensive computation
RaiseEvent MyEvent(...)
End If