.NET 2.0 Assembly and .NET 3.0 Assembly

I have an old project that was build on VS 2008 .NET 2.0. The project is ru开发者_C百科nning fine. We upgraded the project on dev side to VS 2010 .NET 3.0. Now, my question is that if I upload the new 3.0 assemblies on the production will it work. Will some .NET 2.0 assemblies be able to communicate with the .NET 3.0 assembly? Our push to production is a simply DLL (3.0) push and on production most of the assemblies are .NET 2.0.

I think it should work since .NEt 2.0 and .NEt 3.0 share the same codebase. If it was .NET 4.0 then it would be totally different.

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Yes. They will work together: .net 3.0 = .net 2.0 + WCF+WPF+WF

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.NET assemblies can call .NET assemblies which where targeted to older frameworks without problems.

Additionally make sure that all your clients have .NET framework 3.x installed.

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Yes, there is no difference in the runtime between v2.0 and v3.0, or v3.5 for that matter (not counting service packs). v3.0/3.5 were just additional libraries added to the v2.0 runtime, but under the hood it's till v2.0.