Linq not working after .Net 2.0 to 3.5

I started developing an application several weeks ago and decided today that I may want to use LINQ. So I changed my project from .NET Framework 2.0 to 3.5 and restarted the program.

However, I can not get the most basic LINQ statement to work. I thought it was my code until I started a blank .NET 3.5 project and inserted the basic code (below) which worked without issue. So I then started another .NET 2.0 project and inserted the code (which I knew wouldn't work) and the errors are the same as the project that I converted. So next I converted this new .NET 2.0 to 3.5 and the code still doesn't work. So migrating from 2.0 to 3.5 isn't working for LINQ.

My question is: If one changes from a .NET 2.0 to a .NET 3.5 how do they get LINQ to work properly?

Thanks in advace for your suggestions. :)

Code:

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        ' Data source.
        Dim numbers() As Integer = {0, 1, 2, 3, 4, 5, 6}

        ' Query creation.
        Dim evensQuery = From num In numbers
                        Where num Mod 2 = 0
                        Select num

        ' Query execution.
        For Each number In evensQuery
            Console.Write(number & " ")
            ListBox1.Items.Add(number)
        Next

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Did you check your references to see if you still have a reference to the LINQ library? And did you import LINQ?

Yeah. I just tested it. You have to import System.Linq.

Just for future reference, you should always look up errors either directly at MSDN or just doing a search, before coming to the forums.

I looked up this message and found an article on MSDN that you can read here.

Quote:

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Queryable types are defined in the System.Linq, System.Data.Linq, and System.Xml.Linq namespaces. You must import one or more of these namespaces to perform LINQ queries.

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