Hi,

In .NET there is attribute named ObsoleteAttribute which is derived from
System.Attribute Class. This attribute when applied to a target (class or
method etc.) gives a compiler warning/error. I know we can write our own
attributes by inheriting the System.Attribute but I want to make it give
compiler warning or error when it is applied on the defined attribute
target.

How can we write such an attributes?

Regards,
Ashok G

You can't... ObsoleteAttribute is handled as a special-case by the
compiler, not by anything extensible.

What do you want to check, in particular? There may be other ways of
doing it...

Marc

On Apr 24, 8:26=A0am, "AshokG" <gw2ks... [at] hotmail.com> wrote:
> Hi,
>
> In .NET there is attribute named ObsoleteAttribute which is derived from
> System.Attribute Class. This attribute when applied to a target (class or
> method etc.) gives a compiler warning/error. I know we can write our own
> attributes by inheriting the System.Attribute but I want to =A0make it giv=
e
> compiler warning or error when it is applied on the defined attribute
> target.
>
> How can we write such an attributes?
>
> Regards,
> Ashok G

Hi,

AFAIK there is no way of doing that. The compiler knows a given number
of attributes and have CODED actions for them.
You would need to write a new compiler :)