fiddle.cs

// @nuget: CommandLineParser -Version 2.7.82

using System;

using System.Collections.Generic;
using CommandLine;


public class Program
{
	public static void Main()
	{
		var args = new string[] { "10 str1 str2 str3 1.1", "--otheroption", "doo" };
		// (1) default options
		var result = Parser.Default.ParseArguments<Options>(args);
		// or (2) build and configure instance
		//var parser = new Parser(with => with.HelpWriter=Console.Out);	

		result.WithParsed(options =>
		{
			Console.WriteLine("Parser Success- Creating Options with values:");
			Console.WriteLine("options.Value= {0}", options.Value);
			Console.WriteLine("options.OtherOption= {0}", options.OtherOption);
		}

		).WithNotParsed(errs => Console.WriteLine("Failed with errors:\n{0}",
			String.Join("\n",errs)));
	}
}

class Options
{
	[Value(1)]
	public string Value
	{
		get;
		set;
	}
	
	[Option]
	public string OtherOption
	{
		get;
		set;
	}
}