I'm looking at trying to start a process from F#, wait till it's finished, but also read it's output progressively.

Is this the right/best way to do it? (In my case I'm trying to execute git commands, but that is tangential to the question)

let gitexecute (logger:string->unit) cmd = 
    let procStartInfo = new ProcessStartInfo(@"C:\Program Files\Git\bin\git.exe", cmd) 

    // Redirect to the Process.StandardOutput StreamReader.
    procStartInfo.RedirectStandardOutput <- true
    procStartInfo.UseShellExecute <- false;

    // Do not create the black window.
    procStartInfo.CreateNoWindow <- true;

    // Create a process, assign its ProcessStartInfo and start it
    let proc = new Process();
    proc.StartInfo <- procStartInfo;
    proc.Start() |> ignore

    // Get the output into a string
    while not proc.StandardOutput.EndOfStream do
        proc.StandardOutput.ReadLine() |> logger

What I don't understand is how the proc.Start() can return a boolean and also be asynchronous enough for me to get the output out of the while progressively.

Unfortunately, I don't currently have a large enough repository - or slow enough machine, to be able to tell what order things are happening in...