Proper use of the keyword "Using"

Marcus J Smith

Someone at work told me that you can change code that would normally look like the following:

Using certainObject as new Object
Using anotherObject as New Object
Using somethingElse as new Object

           'Do stuff

      End Using
 End Using

End Using

into this:

Using certainObject as new Object, _
anotherObject as New Object, _
somethingElse as new Object

       'Do stuff

End Using

I know that VB.NET does something strange when you dimension multiple variables on the same line - ex. Dim str1, str2, str3 as String, I guess Dim str1 as String, str2 as String, str3 as String would be proper. Because of that I am unsure if it is truly proper to format the code with the second code example. Is one more correct than the other or is this just simply a preference thing?

CleaKO

"Now, a man would have opened both gates, driven through and not bothered to close either gate." - Marc Clifton (The Lounge)

PIEBALDconsult

Don't know about VB, but that won't work in C#.

Paul Conrad

CleaKO wrote:

is this just simply a preference thing?

Both are correct and do the same. It is a preference thing.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon "Not only do you continue to babble nonsense, you can't even correctly remember the nonsense you babbled just minutes ago." - Rob Graham

Dave Kreskowiak

It's just a matter of preference. They both work the same, though, the nesting gives you a little more readability if you're using multiple objects and need them at different levels.

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Luc Pattyn

CleaKO wrote:

Is one more correct than the other

there is no such thing as "more correct"; a statement is correct or it is not correct. :)

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Jon_Boy

Technically in the example, does Object have a dispose method? :cool:

Any suggestions, ideas, or 'constructive criticism' are always welcome. "There's no such thing as a stupid question, only stupid people." - Mr. Garrison

Luc Pattyn

kissdznuts wrote:

does Object have a dispose method?

No, System.Object does not have a Dispose() method, so it does not implement IDisposable. In C# you could make your own Object class, distinct from System.Object; however in VB.NET that seems not possible. :)

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