Castly Dynamic Proxy - Get the target method's return value

Question

When proxying an object and intercepting a method using castle dynamic proxy, is it possible to get the return value of the target method? I have tried using the following methods,

object result = invocation.GetConcreteMethod().Invoke(instance, null); 

object result = invocation.GetConcreteMethodInvocationTarget().Invoke(instance, null);

This causes an infinite loop. I want to be able to get the return value of the original target method being proxied before calling Invocation.Proceed().

EDIT -- Fyi I got it to work by using Activator.CreateInstance, but I'm wondering if there is a cleaner way to achieve the equivalent:

object instance = Activator.CreateInstance(invocation.TargetType); 

invocation.MethodInvocationTarget.Invoke(instance, invocation.Arguments);

The problem is that this is simply a new un-proxied instance of the original object, whereas I want the original un-proxied instance itself.

score 8 · Accepted Answer · answered Jul 25 '11 at 00:41

8

invocation.Proceed();

var returnValue = invocation.ReturnValue;

answered Jul 25 '11 at 00:41

Krzysztof Kozmic

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Always null for me...any thoughts? – Aleksander Bethke Oct 01 '15 at 10:32
it will be null if you call it before `invocation.Proceed()`. After all, something has to produce the return value – Krzysztof Kozmic Jan 10 '20 at 01:02

Castly Dynamic Proxy - Get the target method's return value

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