Am I being 'used' ?

[Brett Wiltshire]

Is it possible to check whether an object (this) has been instantiated
as the target of a using block?

e.g.

public class MyClass : IDisposable
{

public MyClass()
{
if ( ! ThisObjectIntantiatedByUsingBlock() )
{
throw new ApplicationException ( "This class can only be
invoked as the target of a 'using' block." );
}
// whatever
}
public void Dispose()
{
// whatever
}
}
Since a using block expands out to a try/catch/finally I'm guessing
not, but thought I'd plumb the collective depths of your expertise,
just in case.

Cheers,
Brett.

[Jon Skeet [C# MVP]]

Brett Wiltshire <br***@brettw.netwrote:

Is it possible to check whether an object (this) has been instantiated
as the target of a using block?

No. One thing you *can* do is add a finalizer (in debug mode only,
perhaps) which writes an error log entry if it's ever called - and
suppress the finalizer in Dispose.

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

[Marc Gravell]

Ah, if only for a contractual (compiler / runtime enforced) disposable
pattern ;-p
(although the syntax to indicate transfer of ownership [e.g. as the
return from a Create method] might get too messy)

Marc