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The type or namespace name ‘log4net’ could not be found (are you missing a using directive or an assembly reference?)

When creating an application with dotnet 4 (dotnet4) there is a caveat regarding log4net.  One has to change the Target Framework from the default .Net Framework 4 Client Profile to the full .Net Framework 4.

This is done through the project properties.

Honour those who should.

A slightly strange side note is that in my VS2010 log4net showed up in the intellisense to start with but disappeared later; until I did the Target-Framework patch.

The tutorial/quickstart I used is here.

This entry was posted on Tuesday, August 17th, 2010 at 16:05 and is filed under tip. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

30 Responses to “The type or namespace name ‘log4net’ could not be found (are you missing a using directive or an assembly reference?)”

  1. Rajesh says:
    2011-11-03 at 04:50

    Thanks.

    Reply
  2. Perry says:
    2011-11-25 at 16:39

    Thanks. This was my issue exactly.

    Reply
  3. Developer Dude says:
    2012-01-11 at 00:24

    Thanks. Fixed my problem.

    Reply
  4. Ashish Bhalgat says:
    2012-03-15 at 11:11

    Thanks man !
    I spent 1 hour and then look at your solution. It worked.

    Reply
  5. Mani says:
    2012-03-29 at 15:20

    Worked for me! It was a simple fix

    Reply
  6. Krishna says:
    2012-04-26 at 19:47

    It worked thanks.

    Reply
  7. Ariel says:
    2012-05-07 at 14:21

    Worked for me too! Thx.

    Reply
  8. king says:
    2012-06-02 at 07:54

    it works fine

    Reply
  9. Johnny says:
    2012-06-11 at 22:51

    thank you!

    Reply
  10. CA says:
    2012-06-13 at 18:43

    applause

    Reply
  11. sgupta says:
    2012-06-19 at 19:26

    Thanks! This fixed this annoying problem. It started off fine but after rebuilding it started to break.

    Reply
  12. Ken says:
    2012-07-18 at 01:10

    right on… thanks!

    Reply
  13. Ranjani says:
    2012-07-27 at 07:48

    Thanks. it’s working for me

    Reply
  14. Raghu says:
    2012-07-30 at 07:02

    worked for me too thanx..

    Reply
  15. JerseyNo10 says:
    2012-07-30 at 11:56

    Thanks

    Reply
  16. Dave D says:
    2012-08-30 at 14:22

    Thanks, wish I’d found this an hour ago ;-)

    Reply
  17. Raja says:
    2012-10-04 at 01:39

    Thanks a lot. I have been breaking my head for sometime now.

    Reply
  18. Darko says:
    2013-03-19 at 16:38

    I had the exact same problem. Thank you.

    Reply
  19. Tom F says:
    2013-04-27 at 17:03

    Thanks for posting, this might have cost me a lot of time…

    Reply
  20. Ragz says:
    2013-06-18 at 20:03

    Thanks for posting this. I had the same issue.

    Reply
  21. Fah says:
    2013-10-17 at 16:35

    Thanks for the fix.

    Reply
  22. Anonymous says:
    2013-11-08 at 10:12

    It works. Thank you!

    Reply
  23. erick says:
    2014-01-16 at 12:13

    Works like magic. Thanks alot

    Reply
  24. Ramkumar says:
    2014-02-20 at 05:21

    Good post…easily solved my problem..Thank you

    Reply
  25. Saranya says:
    2014-05-23 at 00:50

    Thanks for the post.

    Reply
  26. Sammy says:
    2014-06-13 at 15:45

    Thanks. Great Post!

    Reply
  27. James L says:
    2014-09-28 at 07:32

    thanks

    Reply
  28. Jacob says:
    2014-11-16 at 11:57

    Thanks a lot!

    Reply
  29. Sushmita says:
    2015-04-27 at 06:51

    Thank you, solved my issue.

    Reply

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