Multiple delegates

[puneet4friends]

A button is rgistered with four delegates. Which delegate will be
called first and why ?

 

[Peter Duniho]

A button is rgistered with four delegates. Which delegate will be
called first and why ?

"Registered"? In what way? Do you mean delegates have been subscribed
to the Click event? Or something else? You should be specific about
what you mean.

As far as the answer goes, you can easily observe the behavior yourself
to find out _what_ happens. See the documentation for events and
MulticastDelegate for an explanation.

Pete

 

[Kevin Spencer]

Delegates are essentially linked lists. When you assign a method to a
Delegate, it is added to the list. The list is processed in order from first
to last.

--
HTH,

Kevin Spencer
Microsoft MVP

DSI PrintManager, Miradyne Component Libraries:
http://www.miradyne.net

 

[AJ]

Delegates are essentially linked lists. When you assign a method to a
Delegate, it is added to the list. The list is processed in order from first
to last.

.....unless the code processing the list decides to do otherwise!

 

[Kevin Spencer]

It's a linked list.

--
HTH,

Kevin Spencer
Microsoft MVP

DSI PrintManager, Miradyne Component Libraries:
http://www.miradyne.net

 

[AJ]

It's a linked list.

Yes, but the event source can do what it likes..
Typically it might just do:

given
public event EventHandler<EventArgs> TheEvent;
just call
TheEvent( this , EventArgs.Empty);

but it could do anything like, for example...

foreach( Delegate d in TheEvent.GetInvokationList() )
{
d.BeginInvoke(...)
}

which means it's doing them asynchronously, so the order of arrival
isn't guaranteed.

etc.