F# programmatically running .fsx script file

Question

I'm sure this must be something really easy, but I can't seem to make it work. Let's say I have an .fsx script file and want to cause it to be executed programmatically. I'm guessing someone must have blogged about this at some point, but I can't seem to find an example that performs my simple scenario. Basically, I want to programmatically duplicate what happens when you right click on an .fsx file and choose "Run with F# Interactive..."

Answer 1

As asked in a comment, you can set UseShellExecute to false to avoid opening the Windows shell. This way, you can have your output directly in F# shell:

open System.Diagnostics

let execScript script =
    let psi = new ProcessStartInfo(@"c:\Program Files\Microsoft F#\v4.0\Fsi.exe")
    psi.Arguments <- script
    psi.UseShellExecute <- false
    let p = Process.Start(psi)
    p.WaitForExit()
    p.ExitCode

Answer 2

After randomly messing around with the command line args I finally got it to work. I feel a little lame answering my own question, but hopefully it will still help someone else. It turned out my confusion was the proper usage of the command line arguments. If someone has something more elegant or generally useful than what I put I'll award the answer to you.

open System.Diagnostics

let launchExecutable() =
    let proc = new Process()
    proc.StartInfo.FileName <- @"C:\Program Files (x86)\Microsoft F#\v4.0\fsi.exe"
    proc.StartInfo.Arguments <- @"--exec --nologo pathToFSXFile\Test.fsx"
    proc.Start()


launchExecutable();;