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Asked: 2026-05-12T10:40:03+00:00

I’m targeting .NET 3.5, but cannot get System.Data to come up in Intellisense. What

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I’m targeting .NET 3.5, but cannot get System.Data to come up in Intellisense. What am I missing?

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  1. Editorial Team

    Yes, this is ‘by design’ and not a bug in F#. By default the project templates we ship (in Visual Studio 2010) add the following references:

    • mscorlib.dll – Things like ‘string’
    • FSharp.Core.dll – All things F#
    • System.dll – Things like System.IO
    • System.Core.dll – .NET 3.5 additions, like HashSet<_>
    • System.Numerics.dll – For F#’s BigInteger type

    For any specific libraries like ADO.NET, WPF, WCF, etc. you will need to add the specific assembly references you need.

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