Ch.14 .NETFramework error

smileys6971 · September 22nd, 2011, 10:04 PM

In Chapter 14, the first Try It Out exercise shows how to add a new .edmx file to the App_Code folder. I right clicked the App_Code folder and attempted to add a new ADO.NET Entity Data Model. I received the following error: "Could not resolve mscorlib for target framework '.NETFramework,Version=v4.0'. This can happen if the target framework is not installed or if the framework moniker is incorrectly formatted."

I downloaded VWD in Aug 11 on a new computer with Windows 7. I have since uninstalled and re-installed VWD twice and still get the same error. In the site property pages under the 'Build' tab, the target framework selected is .NET Framework 4. Under installed programs I have 'Microsoft .NET 4 Framework Client Profile', 'Microsoft .NET Framework 4 Extended', and 'Microsoft .NET Framework 4 Multi-Targeting Pack' all are version 4.0.30319.

Please advise. Thank you.

Imar · September 23rd, 2011, 05:40 AM

Hi there,

I haven't run into this issue myself, but others have, and it's been reported here: http://connect.microsoft.com/VisualS...etails/542789/ along with some work arounds. Maybe that helps? Otherwise, try searching for the exact error message and you'll find similar cases: http://www.google.com/#sclient=psy&h...n%3Dv4.0%27%22

Hope this helps,

Imar

smileys6971 · September 27th, 2011, 09:45 AM

Imar,
Thank you for pointing me to those sites. I have been further directed to other sites to get the issue resolved. Once resolved I will post here in case anyone else could use it.

Mark

smileys6971 · October 3rd, 2011, 01:34 PM

Imar,

After trying several options and uninstalling and re-installing VWD several times, I re-installed Windows on the computer and the error has gone away.

Thanks,
Mark

Imar · October 3rd, 2011, 02:11 PM

Hi Mark,

Serious measures,but with a good result fortunately ;-) Thanks for the heads up.

Cheers,

Imar

Gerrie · February 23rd, 2013, 12:24 PM

Having the same problem as many others. I couldn't chose Target framework = .NET framework 4 in the Solution Explorer\Properties, only .NET framework 3.5 or earlier versions. After installing dotnetfx40_full_x86_x64 with .NET framework version 4.03 it still wasn't possible to select Target Framework = .NET framework 4.0
I've installed dotNetFx45_Full_setup and after the installation it is possible to select Target framework = .NET framework 2.0;3.0;3.5;4;4 Update1(KB2478063);4.0.3
After selecting Target framework = .NET framework 4 , TIO from page 481 works fine.

Imar · February 25th, 2013, 10:23 AM

That's really weird. Which version of Visual Studio are you running? VS 2010 should come with .NET 4....

Imar

Gerrie · February 25th, 2013, 02:05 PM

Visual Studio 10. (system: Windows7 pro, 64bits)

with regards, Gerrie

Gerrie · February 25th, 2013, 02:06 PM

Sorry 2010