Enumerable LINQ extensions are hidden on strings... why and how? [duplicate]

This question already has answers here: Closed 12 years ago.

Possible Duplicate:

Why doesn’t VS 2008 display extension methods in Intellisense for String class

Hi all.

Yesterday I noticed that Enumerable LINQ exstensions are hidden on strings (I mean hidden from the intellisense).

We all know string is an IEnumerable<char>, so automatically it should get Enumerable extensions,开发者_Go百科 and actually compiles and works if you use them, but why .NET developers decided to hide them from intellisense?

And lastly, how we can hide extension methods from a specific type ?

P.S. sorry for my poor english...

EDIT: I forgot to say I'm targeting .net 3.5 on VS 2008

EDIT2: Here 2 images of what happen:

Intellisense on string:

Intellisense on string http://img690.imageshack.us/img690/10/stringintelli.png

Intellisense on IEnumerable:

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Not on my copy of Visual Studio (that's 2010, with ReSharper installed):

alt text http://codeka.com/tmp/string-enumerable.png

Perhaps you forgot the using System.Linq; at the top? Or maybe ReSharper is adding them, not sure...

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When I have a string s and type s. I do get all the extensions methods (like FirstOrDefault etc).

I checked with VS2010 Express.

You should of course have the static class System.Linq.Enumerable in scope.

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As for the How part, I guess that something like this attribute was used on String. But clearing the "Hide advanced" option for C# brought no change, so it is not exactly this attribute but something similar.

As for the Why part, no idea. But interesting that it was changed for Fx4