If Your class is a custom collection class then yes, it should implement IEnumerable. In this case a public property for the inner list would be redundant. Imagine a simple class: are two properties in particular—one that points to a query provider (e.g., a LINQ to SQL provider) and another https://cobjectkullanm33715.yourkwikimage.com/781001/hakkında_c_ienumerable_temel_Özellikleri