Reflection questions

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Martin Bischoff - 20 Jul 2006 09:28 GMT

Hi,
if I have two classes, ClassA and ClassB, and ClassA has a member of
type ClassB, is it possible from within ClassB to find out that the
current instance is a member of ClassA?

Example:

class ClassA
{
    private ClassB _myClassB = new ClassB();
}

class ClassB
{
    public void FindOwner()
    {
        // is there some way to find out, that this
        // instance is a member of an instance of
        // ClassA, e.g. using reflection?
    }
}

Thanks,
Martin

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Barry Kelly - 20 Jul 2006 10:06 GMT

> if I have two classes, ClassA and ClassB, and ClassA has a member of
> type ClassB, is it possible from within ClassB to find out that the
> current instance is a member of ClassA?

No, not without a manual brute-force search of the managed object heap.

-- Barry

Signature

http://barrkel.blogspot.com/

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Kevin Yu [MSFT] - 21 Jul 2006 01:44 GMT

Hi Martin,

I agree with Barry, that we can only see a parent has a certain child. But
we cannot check which parent a child belongs to in a very simple method. As
Barry mentioned, only with a brute-force search, can we get the parent of
certain child.

Kevin Yu
Microsoft Online Community Support

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Kevin Yu [MSFT] - 25 Jul 2006 07:46 GMT

Hi Martin,

I'd like to know if this issue has been resolved yet. Is there anything
that I can help. I'm still monitoring on it. If you have any questions,
please feel free to post them in the community.

Kevin Yu
Microsoft Online Community Support

==================================================

(This posting is provided "AS IS", with no warranties, and confers no
rights.)

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Martin Bischoff - 25 Jul 2006 08:28 GMT

Thanks to everybody for the information. I will think about another solution
for my problem.

Best regards,
Martin

> Hi Martin,
>
[quoted text clipped - 9 lines]
> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)

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Kevin Yu [MSFT] - 25 Jul 2006 10:06 GMT

You're welcome, Martin. Please feel free to post in the communtiy if you
need any help.

Kevin Yu
Microsoft Online Community Support

==================================================

(This posting is provided "AS IS", with no warranties, and confers no
rights.)

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Adam Benson - 21 Jul 2006 09:33 GMT

Errrr.... forgive me if this is a dumb question, but if an object must know
who created it, why not force anything creating that object to supply a
this, i.e. :

class ClassA
{
private ClassB _myClassB;
public ClassA()
{
_myClassB = new ClassB(this);
}
}

class ClassB
{
private object parent;
public ClassB(object daddy)
{
this.parent = daddy
}

public void FindOwner()
{
// Get the info from this.parent
}
}

HTH,

Adam.
==========

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