In java it's possible to dynamically implement an interface using a dynamic proxy, something like this:
public static <T> T createProxy(InvocationHandler invocationHandler, Class<T> anInterface) { if (!anInterface.isInterface()) { throw new IllegalArgumentException("Supplied interface must be an interface!"); } return (T) Proxy.newProxyInstance(anInterface.getClassLoader(), new Class[]{anInterface}, invocationHandler); } Is there an equivalent in .Net?
There are several libraries that implement this in .NET. Here's a list of them, with a benchmark.
The most widely used one is the Castle Project's Dynamic Proxy, which is also used by several (or at least 1) mocking frameworks. Keep in mind that methods (and sugared-up methods like properties) are not virtual by default in dotnet, so that can create some headaches if you weren't anticipating it in your class design.
Yes. You derive from the abstract RealProxy class.
Take a look at PoshSharp as well (AOP framework for .NET) - it can do similar things, but in compile time. Probably you'd prefer the approach it supports.
There is no direct equivalent but see How to do Dynamic Proxies in C# for some workarounds:
Background: A dynamic proxy dynamically generates a class at runtime that conforms to a particular interface, proxying all invocations to a single 'generic' method.
Earlier, Stellsmi asked if it's possible to do this in .NET (it's a standard part of Java). Seeing as it's the second time I've talked about it in as many days, I reckon it's worth blogging...
