Is it posible to convert C#2.0 application to C#4.0?

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Hi All,

While running a C# 2.0 application in VS 2010 it display an error message.

Is it possible to convert C#2.0 application to C#4.0?

Posted 7-Jul-11 20:57pm

Kalesh.S.R

Updated 7-Jul-11 21:10pm

Ramalinga Koushik

v2

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Prerak Patel 8-Jul-11 3:01am

Did you even try?

Uday P.Singh 8-Jul-11 3:08am

post the error message!!

[no name] 8-Jul-11 3:10am

What Error it displays.

Groulien 8-Jul-11 3:19am

Did you create this project in an older version of Visual Studio? If so, it's not trying to target C#4.0 and you're asking the wrong question.

2 solutions

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-07-07T21:45:00

Solution 3

When you open a solution or a project created with older versions of Visual Studio with version 2010, you will be offered to run through solution/project converter which will only modify solution and project files, automatically.

As a result of a build you may get some warning due to obsolete types/members.

As Visual Studio prior to 2008 was not multi-target, you may need to change the target Framework to v.4.0. You can select any the target Framework version, they are backward-compatible. The solution targeted for 2.0 will be readily run in the Framework 4.0 or 3.5.

—SA

Posted 7-Jul-11 21:45pm

Sergey Alexandrovich Kryukov

Comments

[no name] 8-Jul-11 4:37am

Perfect.+5.

Sergey Alexandrovich Kryukov 8-Jul-11 4:39am

Thank you, Ramalinga.
--SA

[no name] 8-Jul-11 8:41am

It's my Pleasure.

Tarun.K.S 8-Jul-11 4:57am

Correct. 5+

Sergey Alexandrovich Kryukov 8-Jul-11 4:58am

Thank you, Tarun.
--SA

Ramalinga Koushik · Accepted Answer · 2011-07-07T21:11:00

Solution 2

Just change the Target Framework from 2.0 to 4.0 in the Project Properties.

Posted 7-Jul-11 21:11pm

Ramalinga Koushik

Comments

Sergey Alexandrovich Kryukov 8-Jul-11 3:46am

Correct, bit not 100% clear because you should have explained what happens to projects and solutions and compatibility. I voted 4 and provided additional explanations; please see my solution.
--SA

JV9999 8-Jul-11 3:48am

I do wonder why you deleted my answer which was given earlier but stated exactly the same....

Christian Graus 8-Jul-11 3:54am

There is no way of knowing who deleted your answer. Ramalinga is not an admin AFAIK.

JV9999 8-Jul-11 4:04am

According to the FAQ somebody with platinum authority should be able to delete (which he is). But let's get on topic... I shouldn't have asked it anyway...

Tarun.K.S 8-Jul-11 4:56am

Right. 5+