C# - 验证美国或加拿大邮政编码

Question

我使用以下方法来验证美国或加拿大邮政编码,但我认为它对我不起作用.请建议我正则表达式的变化.

private bool IsUSorCanadianZipCode(string zipCode)
    {
        bool isValidUsOrCanadianZip = false;
        string pattern = @"^\d{5}-\d{4}|\d{5}|[A-Z]\d[A-Z] \d[A-Z]\d$";
        Regex regex = new Regex(pattern);
        return isValidUsOrCanadianZip = regex.IsMatch(zipCode);
    }

谢谢.

Answer 1

    var _usZipRegEx = @"^\d{5}(?:[-\s]\d{4})?$";
    var _caZipRegEx = @"^([ABCEGHJKLMNPRSTVXY]\d[ABCEGHJKLMNPRSTVWXYZ])\ {0,1}(\d[ABCEGHJKLMNPRSTVWXYZ]\d)$";

    private bool IsUSOrCanadianZipCode(string zipCode)
    {
        var validZipCode = true;
        if ((!Regex.Match(zipCode, _usZipRegEx).Success) && (!Regex.Match(zipCode, _caZipRegEx).Success))
        {
            validZipCode = false;
        }
        return validZipCode;
    }
}