Hmmm,

This is uncool.
I guess in this case you have to fallback to my first suggestion with
specialized interceptor, or set of interceptors plus interceptor
selector.
Then you'd do this:
//given IA has a method public int Foo(string bar);

var target = (invocation.Proxy as
IProxyTargetAccessor).DynProxyGetTarget();
var bar = invocation.GetArgumentValue(0) as string;
var result = target.Foo(bar);
invocation.ReturnValue = result;

On the bright side, I already did some work on this issue, so although
it is much larger than I anticipated, I think I should make it work in
a matter of few days.
It is also on our roadmap for v2.2 so this version will include the
fix as well.

Krzysztof



On Jul 6, 2:38 pm, "José F. Romaniello" <[email protected]>
wrote:
> Thank you Krzysztof!! I read all your post about dynproxy.
> I will generate a test case.
>
> This solution doesn't work for me :
>
> var target = (invocation.Proxy as IProxyTargetAccessor).DynProxyGetTarget();
> (invocation as IChangeProxyTarget).ChangeInvocationTarget(target);
> invocation.Proceed();
>
> It give me a System.InvalidCastException cannot convert from  "ObjectA"
> to "IC".
> (remember, ObjectA only implements IA)
>
> Krzysztof Kozmic escribió:
>
> > José,
>
> > As for the additional interceptor, use it to switch the target of
> > invocation to proxy target instead of proxy itself.
>
> > var target = (invocation.Proxy as
> > IProxyTargetAccessor).DynProxyGetTarget();
> > (invocation as IChangeProxyTarget).ChangeInvocationTarget(target);
> > invocation.Proceed();
>
> > this should set you up until we get a proper fix for that.
>
> > Krzysztof
>
> > On Jul 6, 8:08 am, Krzysztof Koźmic <[email protected]>
> > wrote:
>
> >> José,
>
> >> I only have a brief moment, so I can't verify the actual behavior, but
> >> here's what I *think* it may be.
>
> >> It looks like the fact that IC implements IA takes precedense over the
> >> fact that you're implementing proxy for IA in the first place, so the
> >> proxy treats IA as an additional interface, instead of target interface.
> >> The fact that you get proxy as a target is explained 
> >> here:http://kozmic.pl/archive/2009/07/01/castle-dynamic-proxy-tutorial-par...
>
> >> My workaround would be to insert additional interceptor that would take
> >> the target of proxy (invocation.Proxy as
> >> IProxyTargetAccessor).GetProxyTarget() and invoke method directly.
>
> >> It seems like it's part of a larger 
> >> bug:http://support.castleproject.org/projects/DYNPROXY/issues/view/DYNPRO...
>
> >> Please create a testcase and attach it to the issue.
>
> >> Krzysztof
>
> >> José F. Romaniello pisze:
>
> >>> I want a proxy with a target of the following scenrario:
>
> >>> I have three interfaces :
> >>>        -IA
> >>>        -IB
> >>>        -IC : IA, IB   --> (IC inherit IA and IB)
>
> >>> The target is an implementation of "IA" and I want the proxy implements
> >>> IC and IB of course.
>
> >>> proxyGenerator.CreateInterfaceProxyWithTargetInterface(typeof(IA),
> >>>                             new[] { typeof(IC) },                      
> >>> //Aditional interfaces.
> >>>                             anInstanceImplementingIA, options,
> >>>                             new[] { new SampleInterceptor() });
>
> >>> The problem; If I do it in this way calls to members of "IA" never
> >>> reached the target.
> >>> The InvocationTarget of those members is the Proxy, instead
> >>> "anInstanceImplementingIA".
>
> >>> Thanks.
>
>

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