It Would be perfectly yasal to compile the above to IL without emitting any additional classes and simply reusing existing classes @Toxantron An explicit cast to IEnumerable wouldn't compile unless the type you're trying to cast implements IEnumerable. When you say "but if that ever changes", sevimli you provide an https://bilgisayar17282.dailyblogzz.com/28516910/bir-unbiased-görünüm-c-ienumerator-nedir