Simple dynamic command line arguments parser

parser.cs

class Options : DynamicObject
{
    readonly IDictionary<string, object> inner = new ExpandoObject();

    public override bool TryGetMember(GetMemberBinder binder, out object result)
    {
        if (!inner.TryGetValue(binder.Name, out result))
            result = false;
        else
            result = result != null ? new OptionValue(result.ToString()) : (dynamic)true;

        return true;
    }

    public static Options Parse(string[] args)
    {
        return args.Select(s => s.Split(new[] {'='}))
            .Aggregate(new Options(), (d, s) =>
            {
                d.inner[s[0]] = s.Length > 1 ? s[1] : null;
                return d;
            }, d => d);
    }

    class OptionValue : DynamicObject
    {
        private readonly string value;

        public OptionValue(string value)
        {
            this.value = value;
        }

        public override bool TryConvert(ConvertBinder binder, out object result)
        {
            bool _;
            if(binder.ReturnType == typeof(bool) && !bool.TryParse(value, out _))
                result = true;
            else		
                result = TypeDescriptor.GetConverter(binder.ReturnType).ConvertFromInvariantString(value);
				
          return true;
        }
    }
}

usage.cs

dynamic options = Options.Parse(new[]{"flag1", "flag2=1", "flag3=someString"});

Console.WriteLine("Is there flag1? {0}", options.flag1);
Console.WriteLine("flag1 value: {0}", options.flag1);
Console.WriteLine("Is there flag2? {0}", (bool)options.flag2);
Console.WriteLine("flag2 value: {0}", (int)options.flag2);
Console.WriteLine("Is there flag3? {0}", (bool)options.flag3);
Console.WriteLine("flag3 value: {0}", (string)options.flag3);
Console.WriteLine("Is there flag4? {0}", options.flag4);