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What is the best practice for developing a shared class library in Visual Studio 2010 to be used by a .NET 3.5 app and a 4.0 app?
I could do it with separate project/solution files, one for 3.5 and one for 4.0 i.e. MyProject.3.5.csproj and MyProject.4.0.csproj but then I need to keep the files in sync. Is there a better way?
You can create a project in 3.5 framework and use it to create Dlls for to be used in either 3.5 or 4.0 projects