MSIL - how do you invoke a private method from MSIL?

Question

I\'m writing a \"weak event factory\" - code which converts any Delegate into a new delegate with an identical signature, but with implementing a WeakReference on the target

Answer 1

The solution (to my particular problem), was to used delegates instead of direct method calls. You can comfortably construct an open delegate and pass it to the IL code, and then when the IL code invokes the delegate's Invoke method, the JIT accepts the pattern as legal and allows the invoke of the private methods.

Like I said, this is a solution (which happily allows runtime-generated code to call private methods), though it still doesn't explain how technolgies like Expression Trees and Reflection manage to call private methods.