One function implementing Generic and non-generic interface?

The reason for this is that FavoriteItem of IFavoriteItem may not be IItem where on the IFavoriteItem it must be an IItem The only way to solve this is by: IItem IFavoriteItem. FavoriteItem { get { return FavoriteItem; } } This will simply shortcut the call to your TItem implementation A good example of where this is used quite often is with the implementation of IEnumerable These often look like this: public class MyEnumerable : IEnumerable { public IEnumerator GetEnumerator() { throw new NotImplementedException(); } IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); } }.

The reason for this is that FavoriteItem of IFavoriteItem may not be IItem, where on the IFavoriteItem, it must be an IItem. The only way to solve this is by: IItem IFavoriteItem. FavoriteItem { get { return FavoriteItem; } } This will simply shortcut the call to your TItem implementation.

A good example of where this is used quite often is with the implementation of IEnumerable. These often look like this: public class MyEnumerable : IEnumerable { public IEnumerator GetEnumerator() { throw new NotImplementedException(); } IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); } }.

– Shaddix Oct 29 '10 at 7:34 Because it can be an inherited interface of, or a class implementation of IItem. The where does not specify that it must be exactly IItem, but instead that it must be typeof(IItem). IsAssignableFrom().

However, your IFavoriteItem has the exact IItem type specified. – Pieter Oct 29 '10 at 7:36 I get it, thanks. – Shaddix Oct 29 '10 at 8:00 You're welcome.

– Pieter Oct 29 '10 at 8:01.

Yes, this was mine :) This is exactly the reason, why I can't have synonyms, and I understood this. This question is about why TItem:IItem isn't implementing IItem :) – Shaddix Oct 29 '10 at 7:32.

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