static & instance variables

[Jordan Marr]

I have the following class:

class ProvisionCollec tion
{
...

private int m_VarianceCount ;
public int VarianceCount
{
get { return m_VarianceCount ; }
}

public static ProvisionCollec tion GetProvisions(. ..)
{
ProvisionCollec tion list = new ProvisionCollec tion();

... populate collection ...

m_VarianceCount = (int)cmd.Parame ters["@SP_66_COU NT"].Value;
return list;
}
}

My question: Should this static method have access to modify the
private instance variable "m_VarianceCoun t"? Because right now it
works perfectly, but it doesn't seem like it should.

Thanks,
Jordan

[Jon Skeet [C# MVP]]

On May 11, 4:57 pm, Jordan Marr <jnm...@hotmail .comwrote:

I don't see what the problem is. Static doesn't mean you can't access
instance methods. You can as long as you have an instance to operate
on, which your code shows you do.- Hide quoted text -

But I accessed a *private* member of the instance from a static (non
instanced) method. It just doesn't seem like that should work!!

No, that's fine. From within a type, you can access private members of
any instance of the same type.

Jon

[Jordan Marr]

On May 11, 11:55 am, "Jon Skeet [C# MVP]" <[e-mail] wrote:

On May 11, 4:36 pm, Jordan Marr <jnm...@hotmail .comwrote:

Could you post a short but complete program we can compile showing the
above working?

Create a new console app and paste the following two .cs modules:

<snip>

That doesn't show any bugs. Note that you're accessing the member
variables via a reference to an instance, which is fine - and is *not*
what your first post was showing.

Jon

I see what you are saying now. I did indeed misrepresent the
problem. My code that compiled is calling the private member from an
actual instance.

I didn't realize that was valid to reference a private member
"externally " like that (even though the static member is declared
internally). It is convenient that I am able to do this though!

Does "shared" work the same way in VB?

Jordan

[Jon Skeet [C# MVP]]

Jordan Marr <jn****@hotmail .comwrote:

<snip>

I see what you are saying now. I did indeed misrepresent the
problem. My code that compiled is calling the private member from an
actual instance.

I didn't realize that was valid to reference a private member
"externally " like that (even though the static member is declared
internally). It is convenient that I am able to do this though!

Does "shared" work the same way in VB?

Yes, but it's really irrelevant to whether the method is static or not.
It would be the same situation if you try to access private members of
one instance from another. Effectively, the fact that it's a static
method is irrelevant except that there's no "this" to refer to.

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[Christof Nordiek]

"Jordan Marr" <jn****@hotmail .comschrieb im Newsbeitrag
news:11******** *************@e 65g2000hsc.goog legroups.com...

>
But I accessed a *private* member of the instance from a static (non
instanced) method. It just doesn't seem like that should work!!

You seem to suppose private restricts the access to member to methods of the
same *instance*.
But it only limits acces to the same *class* not to the same *instance*.

Christof

[Jordan Marr]

On May 14, 3:05 am, "Christof Nordiek" <[e-mail] wrote:

"Jordan Marr" <jnm...@hotmail .comschrieb im Newsbeitragnews :11************ *********@e65g2 000hsc.googlegr oups.com...

But I accessed a *private* member of the instance from a static (non
instanced) method. It just doesn't seem like that should work!!

You seem to suppose private restricts the access to member to methods of the
same *instance*.
But it only limits acces to the same *class* not to the same *instance*.

Christof

You're right, that is exactly what I was supposing. But I got it
now.
Thanks!

Jordan