It Would be perfectly yasal to compile the above to IL without emitting any additional classes and simply reusing existing classes Understanding the intricacies of IEnumerable and IEnumerator is fundamental for any C# developer aiming to master collections and iterators in . 1 @JimBalter technically it doesn't define any classes. https://pursaklar-zirve-terzi09741.wikimeglio.com/9144594/en_c_ienumerator_nedir_sırları