How to get help information as a variable?

[Ptkatz]

I want to save the help information into a variable, but there seems to be no such operation

[Ptkatz]

I tried it and I can do it using WithNotParsed.

using CommandLine;
using CommandLine.Text;
using System;
using System.Collections.Generic;

public class Options
{
    [Option('v', "verbose", Required = false, HelpText = "Set output to verbose messages.")]
    public bool Verbose { get; set; }

    [Option('n', "name", Required = true, HelpText = "Input name.")]
    public string Name { get; set; }
}

class Program
{
    static void Main(string[] args)
    {
        var parser = new Parser(with => with.HelpWriter = null);
        var parserResult = parser.ParseArguments<Options>(args);

        string helpText = null;

        parserResult
            .WithParsed(opts => RunWithOptions(opts))
            .WithNotParsed(errs => helpText = HandleParseError(parserResult, errs));

        if (helpText != null)
        {
            Console.WriteLine("Help text was generated:");
            Console.WriteLine(helpText);
        }
    }

    static void RunWithOptions(Options opts)
    {
        Console.WriteLine($"Verbose: {opts.Verbose}, Name: {opts.Name}");
    }

    static string HandleParseError<T>(ParserResult<T> parserResult, IEnumerable<Error> errs)
    {
        var helpText = HelpText.AutoBuild(parserResult, h =>
        {
            return HelpText.DefaultParsingErrorsHandler(parserResult, h);
        }, e => e);

        return helpText.ToString();
    }
}