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When do I need "As New" when instantiating object?

So I'll type something like:

Dim cmd As New SqlCommand()(

But for some things, it doesn't like "As New" and wants me to type like:

Dim nod As employeeNode

When do I know when to use "As New" as opposed to not? Intellisense always
sets me straight, but I'd like to understand better.

Thanks,
Ron
Oct 10 '06 #1
3 1264
As New is a shortcut for ...

Dim cmd as SqlCommand = new SqlCommand();

which declares then instantiates a new SqlCommand .. for some things it
doesn't make sense to do this.

Make sense?

Cheers,

Greg

"Ron Cook" <Ro*****@discus sions.microsoft .comwrote in message
news:0D******** *************** ***********@mic rosoft.com...
So I'll type something like:

Dim cmd As New SqlCommand()(

But for some things, it doesn't like "As New" and wants me to type like:

Dim nod As employeeNode

When do I know when to use "As New" as opposed to not? Intellisense
always
sets me straight, but I'd like to understand better.

Thanks,
Ron

Oct 10 '06 #2
Ron Cook wrote:
So I'll type something like:

Dim cmd As New SqlCommand()(

But for some things, it doesn't like "As New" and wants me to type like:

Dim nod As employeeNode

When do I know when to use "As New" as opposed to not? Intellisense always
sets me straight, but I'd like to understand better.

Thanks,
Ron
You cannot use As New if the class doesn't have a public constructor.

Adam Ruth
Oct 11 '06 #3
The other case being you need to use a constructor other than the default,
like:
Dim cmd As New SqlCommand("SEL ECT * FROM MyTable")

Oct 11 '06 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

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