Converting c# .net 2.0 to 4.0

Question

3.00/5 (1 vote)

See more:

Hi all, I am ARUN,
My project is in .net 2.0(Visual Studio),I changed it to .net 4.0. After changing the project
to 4.0, I get around 800 errors. can some one tell me a breif idea why there is
so many errors.
* Thanks in Advance *

Posted 26-Jan-11 17:30pm

arunmj

Updated 26-Jan-11 17:31pm

v2

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Accepted Answer · 2011-01-26T17:40:00

Solution 1

Too bad. Now fix them! Next time program clearly, without a single warning.
Seriously: I never heard of such things. A huge mass of my codes converted from 2.0 without a single complain. You only could receive some "obsolete" warnings. You're doing something fundamentally wrong.

I hope you opened the same very project you created for .NET 2.0 and converted when opened with VS 2010? Are you sure all messages are compilation errors, not warnings? Could you isolate a minimalistic sample to show 2-3 errors and post it?

Thank you.

—SA

Posted 26-Jan-11 17:40pm

Sergey Alexandrovich Kryukov

v2

Comments

Sergey Alexandrovich Kryukov 26-Jan-11 23:43pm

@arunmj: Please don't post your samples as an "Answer" (a very usual misuse) -- put them as a revision of your original Question; all follow-up questions and messages put in comments ("Add comment" or reply icon).
--SA

arunmj 26-Jan-11 23:55pm

the 90% of the bugs only says "does not not exist in correct context". I do understand that its due to missing of assemblies. and this could not happen in my case. here i have changed only the properties .

Sergey Alexandrovich Kryukov 27-Jan-11 0:01am

That's better. If you started from project created with 2.0 and VS 2010 converted it, there should not be missing assemblies. Are those 3-rd party assemblies? Maybe you simply did not copy them properly (you copied you project in different place but not 3rd party assemblies or something). Another variant: did you put any assemblies to GAC? How you referenced one assembly in another: as executable (Add Reference / Browse) or as projects?

Sergey Alexandrovich Kryukov 27-Jan-11 0:05am

Anyway, this is not "conversion 2.0 to 4.0", this is your structure.
Another question for you: did you "convert from 2.0 to 4.0"? I mean, did you comfortable with moving your code from one place to another, from one computer to another. If you never try, this can be a problem. In particular, you should never use a single absolute path anywhere.
Can you post a project file as plain text, to review?

Abhinav S 27-Jan-11 0:06am

Good answer SAKryukov .

Sergey Alexandrovich Kryukov 9-Dec-11 1:21am

Thank you, Abhinav.
--SA

Monjurul Habib 9-Dec-11 1:11am

nice answer, my 5!

Sergey Alexandrovich Kryukov 9-Dec-11 1:21am

Thank you, Monjurul.
--SA

Abhinav S · Accepted Answer · 2011-01-26T18:06:00

Solution 2

Run a .Net 4.0 program once to make sure VS2010 has been installed correctly.

Then as mentioned by SAKryukov earlier, open the .Net 2.0 project / solution in VS2010 and VS2010 should automatically do the conversion for you (a report will then be displayed to show all errors / issues faced during conversion).

Posted 26-Jan-11 18:06pm

Abhinav S

Comments

Sergey Alexandrovich Kryukov 27-Jan-11 0:09am

Thanks for supporting my effort, Abhinav (a 5). See my latest comments to my Answer. This is surely a result of some kind of sloppiness. Even third party libraries could not present a problem. Someone already voting "3" -- for my answer, not too the question -- how expected!

Abhinav S 27-Jan-11 1:05am

Saw your comment. The OP needs to post some more information here before we can help him any further.

Sergey Alexandrovich Kryukov 27-Jan-11 1:14am

Yep, just waiting...

Member 3939495 12-Jun-12 6:14am

No comment

Sergey Alexandrovich Kryukov 27-Jan-11 0:22am

Ok, you receive "3" too, probably from a different member. What are they thinking?

Abhinav S 27-Jan-11 1:04am

I have'nt got a clue. Perhaps they like 3[sarcastic].

Monjurul Habib 9-Dec-11 1:11am

exactly 5+