"Nicholas Paldino [.NET/C# MVP]" wrote:

> Steve,
>
> You aren't going to be able to do this without deriving from a class and
> overriding the OnSelectedIndexChanged method, not calling the base class
> (which fires the event). Removing all of the subscribers then re-attaching
> them is something you really shouldn't be doing, as you are wasting a ton of
> extra processing cycles.
>
> Hope this helps.
>
>
> --
> - Nicholas Paldino [.NET/C# MVP]
> - mvp@spam.guard.caspershouse.com
>
> "Steve Wilkinson" <SteveWilkinson@discussions.microsoft.com> wrote in
> message news:79E882E9-DD3F-438B-A27D-CBB2DE508923@microsoft.com...
> > Is there any method I can use to determine the number of subscribers to a
> > controls events.
> >
> > In particular I'm looking at the ComboBox.SelectedIndexChanged event, I
> > have
> > a scenario where I need to cancel the SelectedIndexChanged event and
> > restore
> > the original SelectedIndex property. To do this I unsubscribe the
> > SelectedIndexChanged event, update the SelectedIndex property and then
> > re-subscribe. I need to do this to prevent the SelectedIndexChanged event
> > from firing twice (i.e once when the user changes the control and twice
> > when
> > the code restores the original value).
> >
> > I don't want to maintain a flag as the entire user interface is generated
> > dynamically.
> >
> > Therefore I need a method to check how many subscribers there are to the
> > SelectedIndexChanged event before I attempt to add another subscription.
> >
> > Any ideas would be appreciated.
> >
> > Steve
>
>