framework for visual studio.net 2010

scampercat

15y1.9k

I wondering if I will have any problems with the setup for my visual studio.net 2010 professional installation. When I open my visual studio.net 2010 ide, and select help and about micorsoft, and click on about microsoft, I see the following:
microsoft framework level 4.0.30319 RTMrel.

However when I open an existing web forms C# solution file and select properties and then select settings, I see the following

target framework is .NET framework 3.5.

Thus my question is shouldn't I be working with the .net framework 4.0 since I am working with visual studio.net 2010?

If this is a problem, can you tell me how to fix the problem? If this is not a problem, can you explain why this is not a problem?

2 Replies

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Javeed M Shaikh15y ago
Accepted answer
Please check that the existing C# application was developed using 4.0 framework if it is developed using 3.5 framework the IDE will default to 3.5.

you can change the Target framework of your existing application by following these steps:

1. Open your solution
2. Click on Project-->YourProject Properties
3. Click on Application menu on left side --> on right side you will see Target Framework dropdown, select your desired framework to work on.

Please do not forget to mark "Accepted Answer".
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Vulpes15y ago
Visual Studio 2010 can in fact target several versions of the .NET Framework including versions 2.0, 3.0, 3.5 or 4.0. If you open up your project's properties then, under the Application tab in the 'Target Framework' dropdown, you should see them all listed.

So, it's no problem opening up an existing project that uses .NET 3.5, making changes and then rebuilding it for that version.
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