Delegate in C#

Thanx Vulpes for ur reply & clearing my doubt

0

Sure Pravin.

Every delegate has a invocation list, which contains a list of all the methods that should be executed when the delegate is invoked.

The += operator is C#'s syntax for adding a method to the invocation list (you can use -= to remove it).

So that particular line adds the method SayGoodbye to del's invocation list.

It can also be written more long-windedly like this:

del += new Del(SayGoodbye);

0

hi Vulpes,

can u plz explain me the foll statement:

del += SayGoodbye;

0

Vulpes14y ago

Here's a simple example of a multicast delegate.

Notice how, when you invoke the delegate 'del', it calls both the SayHello and SayGoodbye methods:

using System;

delegate void Del();

class Test

{

static void Main()

{

Del del = SayHello;

del += SayGoodbye;

del();

Console.ReadKey();

}

static void SayHello()

{

Console.WriteLine("Hello");

}

static void SayGoodbye()

{

Console.WriteLine("Goodbye");

}

0