Proxy question

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Ron Bullman - 26 Jul 2003 18:27 GMT

Hi,

Consider following scenario:
I have a host.exe-assembly (host), functionality.dll-assembyly
(functionality), and a client.dll-assembly (client). Host and client
"imports" statically functionality. (But host doesen't "import" client).
From the host I'm dynamically loading the client to other AppDomain and with
AppDomain.DoCallBack method I can execute code in the dynamically loaded
AppDomain.

And the specific question:
What kind of proxy is needed to enable the client to communicate with the
functionality in the host? And does there exists some (semi)automatic tools
to create such proxy?

Thanks,
Ron

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Kumar Gaurav Khanna [.NET MVP] - 27 Jul 2003 02:52 GMT

Hi!

Any communication across AppDomains involves remoting (typically).

Since the client and the host are in different AppDomains, in order to
reference objects across them, you will need to have objects of classes that
are remoteable, deriving them from MarshalByRefObject. This shall result in
case of the a proxy created in the callers AppDomain. And you dont have to
do anything special for this, except for having the class derive from
MarshalByRefObject.

Alternately, tagging them as Serializable, or implementing ISerializable
will make them go across by value instead of reference.

Regards,
Gaurav Khanna

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> Hi,
>
[quoted text clipped - 13 lines]
> Thanks,
> Ron

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Ron Bullman - 27 Jul 2003 05:01 GMT

Hi Gaurav,

Just deriving from the MarshalByRefObject, will do the trick. Cool!

Ron

> Hi!
>
[quoted text clipped - 42 lines]
> > Thanks,
> > Ron

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