Extension methods in C# 3.0

Is C# becoming a functional language?

David's blog — Sat, 02 Jun 2007 21:27:18 GMT

re: Extension methods in C# 3.0

JH — Wed, 09 Jan 2008 17:52:19 GMT

Pedram,

I am experiencing the same issue (The listing returns null for mi). Have you been able to determine how intellisense is able to discover the extension method?

re: Extension methods in C# 3.0

pedramr — Wed, 09 Jan 2008 17:59:28 GMT

JH, IntelliSense certainly does not use reflection in here. Let’s remember, Extension methods are a compile-time trick played by the compiler. They are effectively nothing more than a static method. Reflection can only expose methods which are real methods exposed by your type.

re: Extension methods in C# 3.0

JH — Wed, 09 Jan 2008 21:54:29 GMT

Yeahp... I knew it couldn't be using reflection... I'm wondering what mechanism it's using to discover the extension methods.

re: Extension methods in C# 3.0

pedramr — Thu, 10 Jan 2008 13:08:14 GMT

JH, the IntelliSense cannot rely only on the metadata included in a compiled assembly because in many cases you need IntelliSense on the code which does not even compile. I don’t know the mechanisms used by the C# IntelliSense to achieve this but I would suspect that it uses the parsing capabilities of the C# parser to build a code tree.