Using F# 2.0 Powerpack ArgParser from C#

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.FSharp.Core;
using Microsoft.FSharp.Text;

namespace fsgetopt
{
    class Program
    {
        static void Main(string[] args)
        {
            Action<string> compile = (s => Console.WriteLine("Compiling {0}...", s));
            var outputName = "a.out";
            var verbose = new FSharpRef<bool>(false);
            var warningLevel = 0;
            ArgInfo[] specs = 
            {
                new ArgInfo("-o", 
                    ArgType.String (FuncConvert.ToFSharpFunc<string> (x => outputName=x)), 
                    "Name of the output"),
                new ArgInfo("-v", 
                    ArgType.Set (verbose), 
                    "Display additional information"),
                new ArgInfo("--warn", 
                    ArgType.Int (FuncConvert.ToFSharpFunc<int> (x => warningLevel=x)), 
                    "Set warning level"),
                new ArgInfo("--", 
                    ArgType.Rest (FuncConvert.ToFSharpFunc<string> (x => Console.WriteLine("rest has {0}", x))), 
                    "Stop parsing command line"),
            };

            var after = FuncConvert.ToFSharpFunc<string>(compile);
            var opt1 = new FSharpOption<FSharpFunc<string, Unit>>(after);
            var opt2 = new FSharpOption<string>("Usage options are:");
            ArgParser.Parse(specs, opt1, opt2);

            Console.WriteLine("outputName = {0}", outputName);
            Console.WriteLine("Verbose = {0}", verbose.Value);
            Console.WriteLine("Warning level = {0}", warningLevel);
        }
    }
}