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Setting objects to Nothing uses less memory!

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Ivan

Thanks for all the insightful responses,

My faith in the garbage collector has been restored.

I have rewritten my sample application so that it doesn't have a
reference to a reference, but instead creates the objects directly
(generation 0 now?)

....
Dim lotsOfData() As Byte
lotsOfData = Array.CreateInstance(GetType(Byte), 1048576) '10 Mb
'Now do nothing, let the garbage collector pick up the fact that
there are no references
'to these objects
End Sub

I expect lotsOfData will be Nothing anyway, since it only has scope
local to this function

And the code for my second button
....
Dim lotsOfData() As Byte
lotsOfData = Array.CreateInstance(GetType(Byte), 1048576) '10 Mb
'Now set these objects to null to see if it makes any difference
to the garbage collector.
lotsOfData = Nothing
End Sub

Also this time I compiled it under release mode :) and there was
absolutely no differences in memory usage between the two, as expected.

On this note I found an interesting article on the garbage collector at
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndotnet/html/dotnetGCbasics.asp

Jon wrote:
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Jay B. Harlow [MVP - Outlook] (VIP)

Ivan,
In addition to the others comments.

Every thing you wanted to know about the .NET GC, but were afraid to ask:

http://msdn.microsoft.com/msdnmag/issues/1100/gci/
http://msdn.microsoft.com/msdnmag/issues/1200/GCI2/

Hope this helps
Jay

"Ivan" <Click here to reveal e-mail address> wrote in message
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System.Array

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