Abort a class in NEW() ?

[Edwin Knoppert]

I'm using VB in ASP.NET, i would like to abort a class.
Best would be during the new member.
The result should be: Nothing

Is this possible?

 

[niceguy]

What do you mean with 'aborting' a class?

If you mean setting an instance of a class to Nothing in the constructor of
that class... AFAIK that can't be done.

 

[Karl Seguin]

No. I'm almost positive new is always guaranteed to return an instance, or
throw an exception, no alternatives.

Karl

 

[Karl Seguin]

Oh, and by the way, it's a good thing that it can't be done, else you'd have
to check for null each time you used new...ugh..ugly code.

The solution, by the way, is to your a Factory. make the constructor
private, and then create a static (shared in vb.net) method:

public class product
private sub new
end sub

public shared function CreateInstance() as Product
if (whatever) then
return nothing
end if
return new Product()
end function
end class

 

[Edwin Knoppert]

Maybe you are right.

Similar:
A com interface should be possible to be recreated if it could be created
the first time.
(A short of guarantee/guideline which should be followed)
I guess it's no different for these kind of objects qua strategy.

 

[Kevin Spencer]

Which trimester?

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
If you push something hard enough,
it will fall over.
- Fudd's First Law of Opposition

 

[Edwin Knoppert]

Huh?
Elaborate..

Which trimester?

--
HTH,

Kevin Spencer
Microsoft MVP
.Net Developer
If you push something hard enough,
it will fall over.
- Fudd's First Law of Opposition

 

[Edwin Knoppert]

Hmm, problems with my sentences?


I'm from Holland.

 

[Kevin Spencer]

Sorry, Edwin. It was an abortion joke. Tasteless, and probably meaningless
in Holland. Pay no attention to the man behind the curtain.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
If you push something hard enough,
it will fall over.
- Fudd's First Law of Opposition

 

[Karl Seguin]

I didn' tget it ,and it _was_ bad when you cleared it up...



Karl