0

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?

argh
  • 933
  • 13
  • 37

3 Answers3

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.

SillyMonkey
  • 1,334
  • 3
  • 11
  • 14
1

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.

Jon Skeet
  • 1,421,763
  • 867
  • 9,128
  • 9,194
  • @argh - I think it is. But it makes for a more complete answer (eg. the reference may get left out depending on how the project is upgraded) – SillyMonkey May 20 '09 at 15:37
0

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

What are Extension Methods?

refer this link

Community
  • 1
  • 1
Prashant Cholachagudda
  • 13,012
  • 23
  • 97
  • 162