Attributes

[Zviki Goldberg]

Hi All...

I have a Auditing system. I want to send Audit messages using attributes. I
managed to activate the ContextAttribut e object, BUT it forced me to inherit
from ContextBound object (which is too much for me, cause I want to use this
attribute auditing also in web pages).
Is there any option to do so ?
Maybe the solution is somewhere in the Demand staff (.NET rle base
security).... How is that check enabled ??

Thanks a lot,...

Zviki.

[Keith Patrick]

Re: Attributes

You can apply attributes to any construct specified in AttributeTarget s.
The thing is, they don't automatically execute, as they are merely
attributes. Certain attributes appear to do so (like
SoapExtenstionA ttribute and ContextAttribut e) because a superclass has a
method call that introspects the construct to search for appropriate
attributes of a certain type and acts upon them. So, to make a long story
short, the only way you can have certain web pages execute an attribute is
to insert it into an already-existing attribute-checking infrastructure
(again, SoapExtensionAt tribute is a fine example, as the web service
superclass automatically looks for SoapExtentionAt tributes)
Another avenue is to put some code to look for and deal with attributes in
some central method call (an MSDN search for SqlParameterAtt ribute will
produce an article illustrating this)

"Zviki Goldberg" <zvikig@matrix. co.il> wrote in message
news:%234JTjTcW DHA.2360@TK2MSF TNGP12.phx.gbl. ..[color=blue]
> Hi All...
>
> I have a Auditing system. I want to send Audit messages using attributes.[/color]
I[color=blue]
> managed to activate the ContextAttribut e object, BUT it forced me to[/color]
inherit[color=blue]
> from ContextBound object (which is too much for me, cause I want to use[/color]
this[color=blue]
> attribute auditing also in web pages).
> Is there any option to do so ?
> Maybe the solution is somewhere in the Demand staff (.NET rle base
> security).... How is that check enabled ??
>
> Thanks a lot,...
>
> Zviki.
>
>[/color]

[Richard Grimes [MVP]]

Re: Attributes


"Zviki Goldberg" <zvikig@matrix. co.il> wrote in message
news:%234JTjTcW DHA.2360@TK2MSF TNGP12.phx.gbl. ..[color=blue]
> Hi All...
>
> I have a Auditing system. I want to send Audit messages using attributes.[/color]
I[color=blue]
> managed to activate the ContextAttribut e object, BUT it forced me to[/color]
inherit[color=blue]
> from ContextBound object (which is too much for me, cause I want to use[/color]
this[color=blue]
> attribute auditing also in web pages).[/color]

Why is this a problem? In an auditing system you want to get informed when
an object method is called. By creating a new context you are defining a
context boundary that must be crossed when method calls are made, hence you
can intercept those calls and do your auditing. The is procisely what
contexts are for (allowing you to intercept method calls).

Have a look at this magazine article for more details (or even buy Juval
Lowy's recent book on .NET Components):

http://msdn.microsoft.com/msdnmag/is...ContextsinNET/

Richard
--
my email evpuneqt@zicf.b et is encrypted with ROT13 (www.rot13.org)