Sergio,
Events are more like delegate properties. Such is you can do the following.
This is good if you want to encapsulate a child objects event. Such as how
I am doing it below. When somebody calls the following:
myObject.RightListItemChanged += new EventHandler (myObject_ItemChanged);
this is what happens underneath in the code. It sets the child objects
SelectedItemChange to the method that I selected above. Even though it is
twice removed. In addition it enabled AutoPostBack.
public event EventHandler RightListItemChanged {
add
{
deniedListBox.SelectedIndexChanged += value;
deniedListBox.AutoPostBack = true;
}
remove
{
deniedListBox.SelectedIndexChanged -= value;
deniedListBox.AutoPostBack = false;
}
}
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Sergio Blanco
Cuaresma
Sent: Thursday, February 19, 2004 2:56 PM
To: [EMAIL PROTECTED]
Subject: Re: [Mono-list] Little question ...
El s�b, 07-02-2004 a las 17:21, Miguel de Icaza escribi�:
> Hey,
>
> > Only one little question: What are the main differences between using
> > "event" keyword or not when creating delegates?
> >
> > Example:
> >
> > delegate void ProbeDelegate (string msg);
> >
> > ProbeDelegate d1;
> > event ProbeDelegate d2;
>
> events can notify more than one function, a delegate only points to a
> single method.
>
> So you can have multiple "listeners".
But, only using delegates you can do:
DelegadoOperacion multiD;
multiD = new DelegadoOperacion(s.suma);
multiD += new DelegadoOperacion(s.resta);
And then call multiD which will call more than one method. So what is
the real difference with events ??
Sergio.
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