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POIntercepting explicit interface implementations with Castle Dynamic Proxy
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copied!<p>I am having trouble getting Castle Dynamic Proxy to intercept methods that are explicit interface implementations. I read here <a href="http://kozmic.pl/category/dynamicproxy/" rel="nofollow">http://kozmic.pl/category/dynamicproxy/</a> that it should be possible to do this. Here are my classes;</p> <pre><code>internal interface IDomainInterface { string DomainMethod(); } public class DomainClass : IDomainInterface { string IDomainInterface.DomainMethod() { return "not intercepted"; } } </code></pre> <p>Here is my interceptor class;</p> <pre><code>public class DomainClassInterceptor : IInterceptor { public void Intercept(IInvocation invocation) { if (invocation.Method.Name == "DomainMethod") invocation.ReturnValue = "intercepted"; else invocation.Proceed(); } } </code></pre> <p>And here is my test (which fails);</p> <pre><code> [TestClass] public void can_intercept_explicit_interface_implementation() { // Create proxy var generator = new ProxyGenerator(); var interceptor = new DomainClassInterceptor(); var proxy = (IDomainInterface)generator.CreateClassProxy(typeof(DomainClass), interceptor); // Invoke proxy method var result = proxy.DomainMethod(); // Check method was intercepted -- fails Assert.AreEqual("intercepted", result); } </code></pre> <p>In addition to not being able to intercept the explicit interface implementation, it also seems that I am not receiving a notification of a non-proxyable member. Here is my proxy generation hook (which acts as a spy);</p> <pre><code>public class DomainClassProxyGenerationHook : IProxyGenerationHook { public int NonProxyableCount; public void MethodsInspected() {} public void NonProxyableMemberNotification(Type type, MemberInfo memberInfo) { NonProxyableCount++; } public bool ShouldInterceptMethod(Type type, MethodInfo methodInfo) { return true; } } </code></pre> <p>Here is my test (which again fails);</p> <pre><code> [TestMethod] public void receive_notification_of_nonproxyable_explicit_interface_implementation() { // Create proxy with generation hook var hook = new DomainClassProxyGenerationHook(); var options = new ProxyGenerationOptions(hook); var generator = new ProxyGenerator(); var interceptor = new DomainClassInterceptor(); var proxy = (IDomainInterface)generator.CreateClassProxy(typeof(DomainClass), options, interceptor); // Check that non-proxyable member notification was received -- fails Assert.IsTrue(hook.NonProxyableCount > 0); } </code></pre> <p>Has anyone had success in getting DP to intercept explicit interface implementations? If so, how?</p>

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