c# - création VSPackage ciblant .net 3.5 et 4 en vs2012 - Stack Overflow

I have a vspackage that works fine in vs2012, but when I change the target to 4 or 3.5 to target older version, I get compile error :

Error 17 The type or namespace name 'PackageRegistrationAttribute' could not be found (are you missing a using directive or an assembly reference?)

and there is no reference to be added for microsoft.visualstudio.shell.10.0 and 9 Is it possible to create a vspackage in vs2012 for older versions ? Thanks

I have a vspackage that works fine in vs2012, but when I change the target to 4 or 3.5 to target older version, I get compile error :

Error 17 The type or namespace name 'PackageRegistrationAttribute' could not be found (are you missing a using directive or an assembly reference?)

and there is no reference to be added for microsoft.visualstudio.shell.10.0 and 9 Is it possible to create a vspackage in vs2012 for older versions ? Thanks

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