Validate ISRC

I asked ChatGPT.

Q:Convert PHP to C#

class Validator
{
    public function validate($isrc)
    {
        return (bool) preg_match('/[A-Z]{2}[A-Z0-9]{3}[0-9]{7}/i', $isrc);
    }
}

A:Here's the equivalent C# code for the PHP Validator class:

using System;
using System.Text.RegularExpressions;

public class Validator
{
    public bool Validate(string isrc)
    {
        Regex regex = new Regex("[A-Z]{2}[A-Z0-9]{3}[0-9]{7}", RegexOptions.IgnoreCase);
        return regex.IsMatch(isrc);
    }
}

In this C# code:

We define a Validator class with a Validate method, just like in the PHP code.

We use the Regex class from the System.Text.RegularExpressions namespace to work with regular expressions in C#.

The regular expression pattern "[A-Z]{2}[A-Z0-9]{3}[0-9]{7}" matches the same pattern as in your PHP code. We added RegexOptions.IgnoreCase to make the regular expression case-insensitive, equivalent to the /i flag in PHP's regex.

We use the IsMatch method to check if the input string isrc matches the regular expression pattern. The result is returned as a boolean value, just like in your PHP code.

This C# code will perform the same validation as your PHP code for ISRC codes.

I have modified the code to test.

using System;
using System.Collections.Generic;
using System.Diagnostics;

static class Program {

    public static IEnumerable<(string isrc, bool expected)> ValidIsrcTestData() {
        yield return ("QM-6QV-14-00007", false);
        yield return ("HKC840500162", true);
    }

    [STAThread]
    static void Main() {

        foreach (var args in ValidIsrcTestData()) {
            var validator = new Validator();
            bool actual = validator.Validate(args.isrc);
            Debug.Assert(actual == args.expected);
        }

   }
]