Technically C# does not allow functions to be outside of a class, however you could debate that static methods of a static class are functions and derece methods. This is a good explanation here: stackoverflow.com/a/155655/2146952 Caius JardCaius Jard 73.7k66 gold badges5252 silver badges8888 bronze badges 4 ok thank you. It https://zanefthuh.cosmicwiki.com/797553/hakkında_c_ienumerator_nerelerde_kullanılıyor