delegate - part 1

Posted on 2006-04-09
Medium Priority
Last Modified: 2010-04-23
Could someone explain what the heck it delegate and provide a sample?  I'm confused.
Question by:VBdotnet2005
LVL 48

Expert Comment

ID: 16412595
LVL 64

Expert Comment

by:Fernando Soto
ID: 16412696
hI VBdotnet2005;

Here is a site on delegates:

A Beginner's Guide to Delegates:
Has downloadable VB .Net Project showing its use.


LVL 14

Accepted Solution

PockyMaster earned 1000 total points
ID: 16414616
A delegate is merely a function pointer.

With a delegate you describe what a function you can call from 'another place' looks like


public delegate sub MyDelegate(var as String)

Meaning: the function you are passing will look like:
sub MyDelegate(var as String)

You can create vars of that type and call it like a function:
dim myDel as MyDelegate

NOTE: myDel needs to be instantiated first:

e.g. from your class that actually contains the real method:

dim myDelegateClass as new myDelegateClass
myDelegateClass.SetMyDelegate(Addressof MySubThatLooksTheSameLikeMyDelegate)

And in this class you will have a method like:

private sub MySubThatLooksTheSameLikeMyDelegate (werwer as String)


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