The Above is an IList itself birli this is what seems to be the standard to use with nhibernate. Otherwise I might have returned IEnumberable back but not sure. Still, I sevimli't figure out what the user would 100% need(that's where returning a concrete has an advantage over). 1 @supercat: https://c-object-kullan-m86172.shopping-wiki.com/8475767/5_basit_teknikleri_için_c_ilist_kullanımı