Re: remoting options

A key factor would be to use dynamic/loose binding to your "business" layer.

Avoid adding a reference to the "business" dll to your GUI project.

Instead implement some sort of factory pattern that supplies the UI code
with a PROXY to your "business" dll (e.g. GetServerObject(type,location)).
Both the proxy and the actual implementation implement a common interface
known to both client + server.

In the first instance the proxy can be a simple wrapper to the class in the
local assembly (or maybe even the class itself).
Later you can change the factory to supply a web-service proxy, a COM+
proxy, an Indigo proxy, or whatever.

Do this and you're well on the way to a service oriented architecture.
No-one says the services have to run on different boxes to start with.


Of course this proxy approach is exactly what web-services, remoting or COM+
do for you under the covers - but you have to CHOOSE one of them.
By implementing your own proxy factory your application code is more
isolated from the underlying client-server protocol.

We can look forward to Indigo - the communications architecture in
Longhorn - which will address the problem in a more elegant way.


.

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