asp.net - Website running .NET 3.5 cannot use feature not part of ISO-2 specs -


I am getting this error:

feature ' {insert Facility here} can not be used because it is not part of the ISO-2 C # language specification

I am working on a .NET 3.5 website on which I have worked and stopped for almost two years. I have never seen this error before my most recent updates. I have completely calculated the amount equivalent to LINQ coding. The'm using and I get on very high LINQ address these errors. Based on what I've read, it seems like I am using .NET 3.5, for some reason it thinks I am using 2.0. But I can not find anything that tells us how to fix it.

An example of a problem is that if I try to add a new item to the App_Code directory, then let me copy the SQL DBML file from LINQ.

If someone can put some light on me then I will fix it, I would appreciate it.

I was unable to find the "Advanced" option under the Build tab, I think it is possible because it is a web app I saw through web.config and found that 2 parts Most things can be important. 3.5.0.0 or v3.5 settings are compatible with the large backup of the web.config settings when there was no error, however, within VS2010 only Intelis and Things are giving me problems. Website error free running Ha.

I have restored total displacement and VS2010 and I still have the same problem. I removed my old institute of VS 2008 and I did not get the issue there. However, I would prefer to use VS 2010 on this project.

I opened the website on VS 02010 on my computer, and there are no reported errors. It seems to me that there is something on my laptop that is causing the problem. As I mentioned above, I have completely restored Visual Studio 2010 and I still have problems, what does this leave? I have only one extension installed in VS, and it is on the same work and on my laptop. Apart from this, I did not restore the extension after reinstalling VS, and the problem persists.

Run both Win7 Ultimate VS2008 and VS2010 runs of PC. VS2010 has the same extension installed on both extensions. On my laptop I have the full version of SQL Server 2008 installed, but only on my desktop is Management Studio (our office has a server). Will SS2008 do anything with it?

Go to your project property, build tab, advanced - which version of C # you use Want to set, to allow? This should be the default on the latest version supported by the version of Visual Studio you are using, but it seems that at some point you have changed it to ISO-2.

(This is certainly true for Windows projects and class libraries - there may be in a web app there. Specifically, in web. Configure Take a look.)

If this is happening recently, I would have to take a look through the changes in any configuration files through your source control history besides a new type of new project Try to make, and See that he has the same problem.

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