Converted project .net 2.0 to 3.5, where are the extension methods?

Question

Hi,

I've recently converted an app from .net 2.0 to 3.5 but I don't see any extension methods... what am I doing wrong? Or what else should I do besides changing the target framework from 2.0 to 3.5 in project settings?

Answer 1

Extension method, is feature of .net 3.5. extension methods are some thing that you need to create !!!

http://stackoverflow.com/questions/403539/what-are-extension-methods

refer this link

Answer 2

Extension methods appear based on the imported namespaces try adding

using System.Linq;

to the top of your files. As Jon says you'll also need add a reference to System.Core.dll assembly.

Answer 3

You not only need to add the using directive for System.Linq as SillyMonkey suggested, but you also need to have a reference to the System.Core assembly if you want to use LINQ.