[program-l] Re: C# Help Please
- From: David Lant <david.lant@xxxxxxxxxxxx>
- To: "'program-l@xxxxxxxxxxxxx'" <program-l@xxxxxxxxxxxxx>
- Date: Mon, 21 Mar 2005 14:41:39 -0000
HI Mark,
Thanks for the link. I'll read that now.
As for using Is Nothing, I am still a bit confused. Although that compiles
OK, I rather think that at the point where the condition is checked, the
Submission event is always going to be nothing. Syntactically, it appears
that:
Public Submission As SubmissionEventHandler
is declaring an object of type SubmissionEventHandler. Now,
SubmissionEventHandler is a Delegate. AS you can see, the declaration does
not instantiate a new instance. It merely declares the event. So I would
sort of expect Submission to be Nothing always. Evidently something clever
is going on in the background, and I shall read that article to see if it
sheds any light before proceeding.
Thanks again.
David Lant
I.T. Consultant
Consultancy & Development
ICT Services
Tel: (01392) 382464
Devon County Council accepts no legal responsibility for the contents of
this message. The views expressed do not reflect those of Devon County
Council.
-----Original Message-----
From: Mark Long [mailto:marklon@xxxxxxxxxxxxx]
Sent: 21 March 2005 14:05
To: program-l@xxxxxxxxxxxxx
Subject: RE: [program-l] Re: C# Help Please
For legacy reasons, VB.NET supports the IsNothing() function. You can use
that.
Have you checked out
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndotnet/ht
ml/raiserespeven.asp
<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndotnet/h
tml/raiserespeven.asp> ?
In VB.NET Raise is the same as the old err.raise. RaiseEvent is what you
want here.
_____
From: program-l-bounce@xxxxxxxxxxxxx on behalf of David Lant
Sent: Mon 21/03/2005 13:24
To: 'program-l@xxxxxxxxxxxxx'
Subject: [program-l] Re: C# Help Please
Hi Ian,
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