Find the inner-most exception without using a while loop?

Question

When C# throws an exception, it can have an inner exception. What I want to do is get the inner-most exception, or in other words, the leaf exception that doesn\'t have an i

Answer 1

Not quite one line but close:

        Func last = null;
        last = e => e.InnerException == null ? e : last(e.InnerException);