Example reading data from a dynamically compiled module.

LoadFromDynamicallyCompiledModule.fs

// Works from .NET Core (netcoreapp2.0), just add nuget package FSharp.Compiler.Service

open System
open System.IO
open Microsoft.FSharp.Compiler.SourceCodeServices

let nugetPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), ".nuget")
let systemRuntimePath = Path.Combine(nugetPath, "packages/System.Runtime/4.3.0/ref/netstandard1.5/System.Runtime.dll")

[<EntryPoint>]
let main argv =

    async {
        let sourceTok = FSharpSourceTokenizer ([], Some "/tmp/blah.fsx")
        let tokenizer = sourceTok.CreateLineTokenizer
        let checker = FSharpChecker.Create ()
        let tempPath = Path.GetTempFileName()
        let tempSourcePath = Path.ChangeExtension(tempPath, ".fsx")
        let tempOutPath = Path.ChangeExtension(tempPath, ".dll")

        File.WriteAllText (tempSourcePath, """
        module M

        let serverPort = 2220
        """)
        printfn "Building %s" tempOutPath        
        let! errors, exitCode = checker.Compile ([|"fsc.exe"; "-o"; tempOutPath; "-a"; tempSourcePath; "--targetprofile:netcore"; "--simpleresolution"; "--noframework"; "-r:" + systemRuntimePath|])
        printfn "%A" (errors, exitCode)
        let a = System.Reflection.Assembly.LoadFrom(tempOutPath)
        let modl = a.GetTypes() |> Array.find (fun t -> t.Name = "M")
        let serverPortProp = modl.GetProperty ("serverPort")
        serverPortProp.GetValue(null)
        |> printfn "value of M.serverPort is: %A"
        File.Delete (tempOutPath)
        File.Delete (tempSourcePath)
    } |> Async.RunSynchronously
    0