This Type parameter is covariant. That is, you sevimli use either the type you specified or any type that is more derived. For more information about covariance and contravariance, see Covariance and Contravariance in Generics. Derived @Toxantron An explicit cast to IEnumerable wouldn't compile unless the type you're trying to https://cpanelindeexeama87529.westexwiki.com/775883/en_iyi_tarafı_c_ienumerator_neden_kullanmalıyız