Ayende @ Rahienhttp://ayende.comAyende @ RahienCopyright (C) Ayende Rahien 2004 - 2021 (c) 202660Doug Mayer commented on Generics Challage: Assert Return Types MatchesWow, this is a good one. The method's return type will always be T, because at runtime it's resolved from System.RuntimeType. The only way I'd know of is to also have a LastReturnType static field on Dog and set it to typeof(T) in BarkInvocation<T>.Bark()... which I'm sure there's a reason you're not already doing (I know I hate to add what I feel are more fields that aren't required). @Weex, If you do a test as I mention above, you'll see that just calling typeof(IList<string>).IsInstanceOf(new List<string>()); will return true. http://ayende.com/2132/generics-challage-assert-return-types-matches#comment2http://ayende.com/2132/generics-challage-assert-return-types-matches#comment2Fri, 23 Feb 2007 14:22:14 GMTWeex commented on Generics Challage: Assert Return Types MatchesIList<string> is not an instance of List<string>, isn't it? http://ayende.com/2132/generics-challage-assert-return-types-matches#comment1http://ayende.com/2132/generics-challage-assert-return-types-matches#comment1Fri, 23 Feb 2007 13:37:54 GMT