Question

Finally, I have been able to get through reflection, a member of type Func<T, TResult>, now, how do I invoke it?

When I retrieve it, I do it through the Type.GetMembers method, and that returns a MemberInfo type that does not have a Invoke method; how can I invoke it?

Again people, thanks in advance! =)

Answer 1

In order to get a delegate to the method you need to call MakeGenericMethod passing in the generic type arguments – this returns an invokable delegate:

var constructedMethod 
    = yourMethodInfo.MakeGenericMethod(typeof(int), typeof(string));
constructedMethod.Invoke(yourInstance, yourArguments);

If you are curious, the reason you need to do this is because the MethodInfo instance you currently hold is open, meaning that no generic type arguments have been bound to it (and naturally this method cannot be invoked which is why there is no Invoke method available). By calling MakeGenericMethod you are explicitly constructing the method with generic type arguments.

For reference – MakeGenericMethod:

[Returns] a MethodInfo object that represents
the constructed method formed by
substituting the elements of
typeArguments for the type parameters
of the current generic method
definition.